./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 44610cb4431513b4b9429bb48b9c496068c0f3a3836e87f731a95bf3b77832c9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:51:40,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:51:40,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:51:40,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:51:40,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:51:40,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:51:40,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:51:40,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:51:40,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:51:40,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:51:40,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:51:40,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:51:40,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:51:40,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:51:40,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:51:40,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:51:40,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:51:40,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:51:40,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:51:40,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:51:40,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:51:40,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:51:40,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:51:40,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:51:40,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:51:40,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:51:40,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:51:40,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:51:40,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:51:40,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:51:40,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:51:40,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:51:40,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:51:40,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:51:40,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:51:40,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:51:40,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:51:40,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:51:40,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:51:40,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:51:40,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:51:40,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:51:40,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:51:40,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:51:40,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:51:40,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:51:40,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:51:40,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:51:40,262 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:51:40,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:51:40,263 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:51:40,263 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:51:40,264 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:51:40,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:51:40,264 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:51:40,265 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:51:40,265 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:51:40,265 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:51:40,265 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:51:40,265 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:51:40,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:51:40,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:51:40,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:51:40,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:51:40,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:51:40,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:51:40,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:51:40,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:51:40,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:51:40,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:51:40,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:51:40,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:51:40,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:51:40,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:51:40,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:51:40,271 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:51:40,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:51:40,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:51:40,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:51:40,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:51:40,272 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44610cb4431513b4b9429bb48b9c496068c0f3a3836e87f731a95bf3b77832c9 [2021-11-23 03:51:40,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:51:40,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:51:40,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:51:40,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:51:40,563 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:51:40,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i [2021-11-23 03:51:40,631 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/data/5e031eebe/b41d0c11129740bb84f39ec93304a263/FLAGa4a3dbeeb [2021-11-23 03:51:41,732 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:51:41,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i [2021-11-23 03:51:41,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/data/5e031eebe/b41d0c11129740bb84f39ec93304a263/FLAGa4a3dbeeb [2021-11-23 03:51:42,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/data/5e031eebe/b41d0c11129740bb84f39ec93304a263 [2021-11-23 03:51:42,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:51:42,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:51:42,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:51:42,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:51:42,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:51:42,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:42" (1/1) ... [2021-11-23 03:51:42,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b86db09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:42, skipping insertion in model container [2021-11-23 03:51:42,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:51:42" (1/1) ... [2021-11-23 03:51:42,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:51:42,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:51:43,592 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i[193558,193571] [2021-11-23 03:51:47,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:51:47,953 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:51:48,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i[193558,193571] [2021-11-23 03:51:48,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:51:48,888 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:51:48,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48 WrapperNode [2021-11-23 03:51:48,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:51:48,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:51:48,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:51:48,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:51:48,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (1/1) ... [2021-11-23 03:51:49,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (1/1) ... [2021-11-23 03:51:49,623 INFO L137 Inliner]: procedures = 537, calls = 8428, calls flagged for inlining = 241, calls inlined = 238, statements flattened = 14899 [2021-11-23 03:51:49,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:51:49,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:51:49,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:51:49,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:51:49,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (1/1) ... [2021-11-23 03:51:49,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (1/1) ... [2021-11-23 03:51:49,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (1/1) ... [2021-11-23 03:51:49,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (1/1) ... [2021-11-23 03:51:50,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (1/1) ... [2021-11-23 03:51:50,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (1/1) ... [2021-11-23 03:51:50,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (1/1) ... [2021-11-23 03:51:50,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:51:50,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:51:50,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:51:50,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:51:50,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (1/1) ... [2021-11-23 03:51:50,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:51:50,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:50,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:51:50,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:51:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 03:51:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 03:51:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-23 03:51:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-23 03:51:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread32_locked [2021-11-23 03:51:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread32_locked [2021-11-23 03:51:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_tx_info_clear_status [2021-11-23 03:51:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_tx_info_clear_status [2021-11-23 03:51:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure zd_check_signal [2021-11-23 03:51:50,558 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_check_signal [2021-11-23 03:51:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-23 03:51:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-23 03:51:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-11-23 03:51:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-11-23 03:51:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure post_reset [2021-11-23 03:51:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure post_reset [2021-11-23 03:51:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_init_hw [2021-11-23 03:51:50,559 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_init_hw [2021-11-23 03:51:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:51:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:51:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-23 03:51:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-23 03:51:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2021-11-23 03:51:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2021-11-23 03:51:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_usbdev [2021-11-23 03:51:50,560 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_usbdev [2021-11-23 03:51:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_rx [2021-11-23 03:51:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_rx [2021-11-23 03:51:50,561 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_set_channel [2021-11-23 03:51:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_set_channel [2021-11-23 03:51:50,561 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_clear [2021-11-23 03:51:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_clear [2021-11-23 03:51:50,561 INFO L130 BoogieDeclarations]: Found specification of procedure zd_switch_radio_off [2021-11-23 03:51:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_switch_radio_off [2021-11-23 03:51:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure free_rx_urb [2021-11-23 03:51:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rx_urb [2021-11-23 03:51:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_configure_filter [2021-11-23 03:51:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_configure_filter [2021-11-23 03:51:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_queue_reset_device [2021-11-23 03:51:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_queue_reset_device [2021-11-23 03:51:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:51:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:51:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure fw_reg_addr [2021-11-23 03:51:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_reg_addr [2021-11-23 03:51:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_beacon_get [2021-11-23 03:51:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_beacon_get [2021-11-23 03:51:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure zd_switch_radio_on [2021-11-23 03:51:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_switch_radio_on [2021-11-23 03:51:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 03:51:50,563 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_config [2021-11-23 03:51:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_config [2021-11-23 03:51:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-11-23 03:51:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-11-23 03:51:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure uw2453_init_mode [2021-11-23 03:51:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure uw2453_init_mode [2021-11-23 03:51:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-23 03:51:50,564 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-23 03:51:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-23 03:51:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_enable_hwint [2021-11-23 03:51:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_enable_hwint [2021-11-23 03:51:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:51:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:51:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:51:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_lock_phy_regs [2021-11-23 03:51:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_lock_phy_regs [2021-11-23 03:51:50,565 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:51:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:51:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_to_chip [2021-11-23 03:51:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_to_chip [2021-11-23 03:51:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_free_cur_beacon_locked [2021-11-23 03:51:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_free_cur_beacon_locked [2021-11-23 03:51:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_is_first [2021-11-23 03:51:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_is_first [2021-11-23 03:51:50,566 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_iowrite16v_async [2021-11-23 03:51:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_iowrite16v_async [2021-11-23 03:51:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-11-23 03:51:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-11-23 03:51:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:51:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:51:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwrite_locked [2021-11-23 03:51:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwrite_locked [2021-11-23 03:51:50,567 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-23 03:51:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-23 03:51:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:51:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:51:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:51:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:51:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_is_locked [2021-11-23 03:51:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_is_locked [2021-11-23 03:51:50,568 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_free_cur_beacon [2021-11-23 03:51:50,568 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_free_cur_beacon [2021-11-23 03:51:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_remove_interface [2021-11-23 03:51:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_remove_interface [2021-11-23 03:51:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:51:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure check_read_regs [2021-11-23 03:51:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure check_read_regs [2021-11-23 03:51:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_clear [2021-11-23 03:51:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_clear [2021-11-23 03:51:50,569 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx_packet [2021-11-23 03:51:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx_packet [2021-11-23 03:51:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_stop [2021-11-23 03:51:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_stop [2021-11-23 03:51:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite32a_locked [2021-11-23 03:51:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite32a_locked [2021-11-23 03:51:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure zd1211b_al7230b_finalize [2021-11-23 03:51:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure zd1211b_al7230b_finalize [2021-11-23 03:51:50,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:51:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:51:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_24 [2021-11-23 03:51:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_24 [2021-11-23 03:51:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite16_locked [2021-11-23 03:51:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite16_locked [2021-11-23 03:51:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-23 03:51:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-23 03:51:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure test_init [2021-11-23 03:51:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure test_init [2021-11-23 03:51:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-11-23 03:51:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-11-23 03:51:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure request_fw_file [2021-11-23 03:51:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure request_fw_file [2021-11-23 03:51:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure dump_cr [2021-11-23 03:51:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_cr [2021-11-23 03:51:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2021-11-23 03:51:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2021-11-23 03:51:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mc_clear [2021-11-23 03:51:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mc_clear [2021-11-23 03:51:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:51:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure zd_write_mac_addr_common [2021-11-23 03:51:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_write_mac_addr_common [2021-11-23 03:51:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_prepare_multicast [2021-11-23 03:51:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_prepare_multicast [2021-11-23 03:51:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-23 03:51:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-23 03:51:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_disable_tx [2021-11-23 03:51:50,573 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_disable_tx [2021-11-23 03:51:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_hw [2021-11-23 03:51:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_hw [2021-11-23 03:51:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:51:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-23 03:51:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-23 03:51:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_ioread16 [2021-11-23 03:51:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_ioread16 [2021-11-23 03:51:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:51:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_resume [2021-11-23 03:51:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_resume [2021-11-23 03:51:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:51:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:51:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:51:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-23 03:51:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-23 03:51:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread32v_locked [2021-11-23 03:51:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread32v_locked [2021-11-23 03:51:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure get_fw_name [2021-11-23 03:51:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fw_name [2021-11-23 03:51:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:51:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:51:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_is_zd1211b [2021-11-23 03:51:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_is_zd1211b [2021-11-23 03:51:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-23 03:51:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-23 03:51:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure set_beacon_interval [2021-11-23 03:51:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure set_beacon_interval [2021-11-23 03:51:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_filter [2021-11-23 03:51:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_filter [2021-11-23 03:51:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure uw2453_synth_set_channel [2021-11-23 03:51:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure uw2453_synth_set_channel [2021-11-23 03:51:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-23 03:51:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-23 03:51:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_iowrite16v_async_start [2021-11-23 03:51:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_iowrite16v_async_start [2021-11-23 03:51:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_disable_rx [2021-11-23 03:51:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_disable_rx [2021-11-23 03:51:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure zd1211b_al2230_finalize_rf [2021-11-23 03:51:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure zd1211b_al2230_finalize_rf [2021-11-23 03:51:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite32_locked [2021-11-23 03:51:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite32_locked [2021-11-23 03:51:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure handle_regs_int_override [2021-11-23 03:51:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_regs_int_override [2021-11-23 03:51:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_set_multicast_hash [2021-11-23 03:51:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_set_multicast_hash [2021-11-23 03:51:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-23 03:51:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-23 03:51:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 03:51:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 03:51:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure disable_hwint [2021-11-23 03:51:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_hwint [2021-11-23 03:51:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:51:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:51:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_tx_status [2021-11-23 03:51:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_tx_status [2021-11-23 03:51:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_disable_rxtx [2021-11-23 03:51:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_disable_rxtx [2021-11-23 03:51:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-23 03:51:50,580 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-23 03:51:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_unlock_phy_regs [2021-11-23 03:51:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_unlock_phy_regs [2021-11-23 03:51:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 03:51:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 03:51:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:51:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:51:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_name [2021-11-23 03:51:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_name [2021-11-23 03:51:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-23 03:51:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-23 03:51:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-23 03:51:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-23 03:51:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_clear [2021-11-23 03:51:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_clear [2021-11-23 03:51:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwritev_locked [2021-11-23 03:51:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwritev_locked [2021-11-23 03:51:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:51:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:51:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_wake_queues [2021-11-23 03:51:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_wake_queues [2021-11-23 03:51:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_control_leds [2021-11-23 03:51:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_control_leds [2021-11-23 03:51:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-23 03:51:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-23 03:51:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 03:51:50,583 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 03:51:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure scnprint_id___0 [2021-11-23 03:51:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure scnprint_id___0 [2021-11-23 03:51:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_pspoll [2021-11-23 03:51:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_pspoll [2021-11-23 03:51:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_iowrite16v_async_end [2021-11-23 03:51:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_iowrite16v_async_end [2021-11-23 03:51:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:51:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:51:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure upload_code [2021-11-23 03:51:50,584 INFO L138 BoogieDeclarations]: Found implementation of procedure upload_code [2021-11-23 03:51:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:51:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:51:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-23 03:51:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-23 03:51:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwrite_cr_locked [2021-11-23 03:51:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwrite_cr_locked [2021-11-23 03:51:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~TO~int [2021-11-23 03:51:50,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~TO~int [2021-11-23 03:51:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-23 03:51:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-23 03:51:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure set_rts_cts [2021-11-23 03:51:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rts_cts [2021-11-23 03:51:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_mac [2021-11-23 03:51:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_mac [2021-11-23 03:51:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure __zd_usb_disable_rx [2021-11-23 03:51:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __zd_usb_disable_rx [2021-11-23 03:51:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure zd_submit_waiting_urb [2021-11-23 03:51:50,586 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_submit_waiting_urb [2021-11-23 03:51:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_stop [2021-11-23 03:51:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_stop [2021-11-23 03:51:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_tx_status_irqsafe [2021-11-23 03:51:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_tx_status_irqsafe [2021-11-23 03:51:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_reset_rx_idle_timer [2021-11-23 03:51:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_reset_rx_idle_timer [2021-11-23 03:51:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:51:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:51:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-23 03:51:50,587 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-23 03:51:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 03:51:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 03:51:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure zd_set_beacon_interval [2021-11-23 03:51:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_set_beacon_interval [2021-11-23 03:51:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 03:51:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 03:51:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:51:50,588 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:51:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcdDevice [2021-11-23 03:51:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcdDevice [2021-11-23 03:51:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_disable_int [2021-11-23 03:51:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_disable_int [2021-11-23 03:51:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:51:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:51:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-23 03:51:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-23 03:51:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 03:51:50,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 03:51:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:51:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:51:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:51:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rf_init_hw [2021-11-23 03:51:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rf_init_hw [2021-11-23 03:51:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure __zd_usb_enable_rx [2021-11-23 03:51:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __zd_usb_enable_rx [2021-11-23 03:51:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure usb_int_regs_length [2021-11-23 03:51:50,590 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_int_regs_length [2021-11-23 03:51:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:51:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-23 03:51:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-23 03:51:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-11-23 03:51:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-11-23 03:51:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite32 [2021-11-23 03:51:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite32 [2021-11-23 03:51:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:51:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure zd_mac_config_beacon [2021-11-23 03:51:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_mac_config_beacon [2021-11-23 03:51:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-23 03:51:50,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-23 03:51:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 03:51:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 03:51:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 03:51:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 03:51:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure zd_hw_mac [2021-11-23 03:51:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_hw_mac [2021-11-23 03:51:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure read_values [2021-11-23 03:51:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure read_values [2021-11-23 03:51:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-23 03:51:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-23 03:51:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 03:51:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 03:51:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-23 03:51:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-23 03:51:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_start [2021-11-23 03:51:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_start [2021-11-23 03:51:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-23 03:51:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-23 03:51:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-23 03:51:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-23 03:51:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 03:51:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 03:51:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect [2021-11-23 03:51:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect [2021-11-23 03:51:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure zd_intf_to_hw [2021-11-23 03:51:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_intf_to_hw [2021-11-23 03:51:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure inc_addr [2021-11-23 03:51:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure inc_addr [2021-11-23 03:51:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-11-23 03:51:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-11-23 03:51:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_to_mac [2021-11-23 03:51:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_to_mac [2021-11-23 03:51:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure zd_rfwritev_cr_locked [2021-11-23 03:51:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_rfwritev_cr_locked [2021-11-23 03:51:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-23 03:51:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-23 03:51:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure pre_reset [2021-11-23 03:51:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pre_reset [2021-11-23 03:51:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-23 03:51:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-23 03:51:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:51:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:51:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_switch_radio_on [2021-11-23 03:51:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_switch_radio_on [2021-11-23 03:51:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-11-23 03:51:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-11-23 03:51:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:51:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:51:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-11-23 03:51:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-11-23 03:51:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure uw2453_write_vco_cfg [2021-11-23 03:51:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure uw2453_write_vco_cfg [2021-11-23 03:51:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:51:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_switch_radio_off [2021-11-23 03:51:50,598 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_switch_radio_off [2021-11-23 03:51:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ep_regs_out_msg [2021-11-23 03:51:50,598 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ep_regs_out_msg [2021-11-23 03:51:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-23 03:51:50,598 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-23 03:51:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:51:50,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:51:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_to_chip [2021-11-23 03:51:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_to_chip [2021-11-23 03:51:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_disable_hwint [2021-11-23 03:51:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_disable_hwint [2021-11-23 03:51:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_ioread16v [2021-11-23 03:51:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_ioread16v [2021-11-23 03:51:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure zd_usb_init_hw [2021-11-23 03:51:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_usb_init_hw [2021-11-23 03:51:50,599 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread16_locked [2021-11-23 03:51:50,599 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread16_locked [2021-11-23 03:51:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_init_hw [2021-11-23 03:51:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_init_hw [2021-11-23 03:51:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_bss_info_changed [2021-11-23 03:51:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_bss_info_changed [2021-11-23 03:51:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_RXCB [2021-11-23 03:51:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_RXCB [2021-11-23 03:51:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-23 03:51:50,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-23 03:51:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-11-23 03:51:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-11-23 03:51:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_get_tsf [2021-11-23 03:51:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_get_tsf [2021-11-23 03:51:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_disable_int [2021-11-23 03:51:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_disable_int [2021-11-23 03:51:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 03:51:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 03:51:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2021-11-23 03:51:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2021-11-23 03:51:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure zd_ioread16v_locked [2021-11-23 03:51:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_ioread16v_locked [2021-11-23 03:51:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 03:51:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 03:51:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure zd_chip_enable_int [2021-11-23 03:51:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_chip_enable_int [2021-11-23 03:51:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2021-11-23 03:51:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2021-11-23 03:51:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 03:51:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 03:51:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure _zd_iowrite32v_async_locked [2021-11-23 03:51:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure _zd_iowrite32v_async_locked [2021-11-23 03:51:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure set_mac_and_bssid [2021-11-23 03:51:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mac_and_bssid [2021-11-23 03:51:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_tx [2021-11-23 03:51:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_tx [2021-11-23 03:51:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure zd_op_add_interface [2021-11-23 03:51:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_op_add_interface [2021-11-23 03:51:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:51:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure zd_write_mac_addr [2021-11-23 03:51:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_write_mac_addr [2021-11-23 03:51:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-23 03:51:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-23 03:51:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure zd_iowrite16a_locked [2021-11-23 03:51:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure zd_iowrite16a_locked [2021-11-23 03:51:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-23 03:51:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-23 03:51:52,014 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:51:52,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:51:54,773 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:56:11,295 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:56:13,918 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:56:13,918 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 03:56:13,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:13 BoogieIcfgContainer [2021-11-23 03:56:13,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:56:13,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:56:13,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:56:13,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:56:13,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:51:42" (1/3) ... [2021-11-23 03:56:13,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5047da94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:56:13, skipping insertion in model container [2021-11-23 03:56:13,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:51:48" (2/3) ... [2021-11-23 03:56:13,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5047da94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:56:13, skipping insertion in model container [2021-11-23 03:56:13,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:13" (3/3) ... [2021-11-23 03:56:13,938 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--zd1211rw--zd1211rw.ko-entry_point.cil.out.i [2021-11-23 03:56:13,944 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:56:13,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:56:14,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:56:14,036 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:56:14,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:56:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 3254 states, 1930 states have (on average 1.304663212435233) internal successors, (2518), 2025 states have internal predecessors, (2518), 1126 states have call successors, (1126), 197 states have call predecessors, (1126), 196 states have return successors, (1122), 1117 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-23 03:56:14,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:56:14,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:14,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:56:14,139 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:14,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:14,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2131203342, now seen corresponding path program 1 times [2021-11-23 03:56:14,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:14,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619078664] [2021-11-23 03:56:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:14,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:15,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:15,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619078664] [2021-11-23 03:56:15,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619078664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:15,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:15,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:56:15,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135519478] [2021-11-23 03:56:15,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:15,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:56:15,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:56:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:15,259 INFO L87 Difference]: Start difference. First operand has 3254 states, 1930 states have (on average 1.304663212435233) internal successors, (2518), 2025 states have internal predecessors, (2518), 1126 states have call successors, (1126), 197 states have call predecessors, (1126), 196 states have return successors, (1122), 1117 states have call predecessors, (1122), 1122 states have call successors, (1122) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:56:21,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:56:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:31,169 INFO L93 Difference]: Finished difference Result 9689 states and 14314 transitions. [2021-11-23 03:56:31,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:56:31,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-11-23 03:56:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:31,261 INFO L225 Difference]: With dead ends: 9689 [2021-11-23 03:56:31,262 INFO L226 Difference]: Without dead ends: 6412 [2021-11-23 03:56:31,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:31,306 INFO L933 BasicCegarLoop]: 5405 mSDtfsCounter, 4665 mSDsluCounter, 4731 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 9691 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:31,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4668 Valid, 9691 Invalid, 921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 911 Invalid, 1 Unknown, 0 Unchecked, 15.3s Time] [2021-11-23 03:56:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6412 states. [2021-11-23 03:56:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6412 to 6411. [2021-11-23 03:56:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 3804 states have (on average 1.2975814931650893) internal successors, (4936), 3980 states have internal predecessors, (4936), 2217 states have call successors, (2217), 391 states have call predecessors, (2217), 389 states have return successors, (2216), 2205 states have call predecessors, (2216), 2216 states have call successors, (2216) [2021-11-23 03:56:31,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 9369 transitions. [2021-11-23 03:56:31,941 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 9369 transitions. Word has length 25 [2021-11-23 03:56:31,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:31,942 INFO L470 AbstractCegarLoop]: Abstraction has 6411 states and 9369 transitions. [2021-11-23 03:56:31,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:56:31,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 9369 transitions. [2021-11-23 03:56:31,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:56:31,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:31,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:56:31,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:56:31,951 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:31,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1271752750, now seen corresponding path program 1 times [2021-11-23 03:56:31,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:31,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894533321] [2021-11-23 03:56:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:31,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:56:32,631 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:32,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894533321] [2021-11-23 03:56:32,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894533321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:32,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:32,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:56:32,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555896869] [2021-11-23 03:56:32,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:32,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:56:32,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:32,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:56:32,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:56:32,635 INFO L87 Difference]: Start difference. First operand 6411 states and 9369 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:56:37,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:42,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:56:53,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:53,971 INFO L93 Difference]: Finished difference Result 12775 states and 18788 transitions. [2021-11-23 03:56:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:56:53,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-11-23 03:56:53,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:54,118 INFO L225 Difference]: With dead ends: 12775 [2021-11-23 03:56:54,118 INFO L226 Difference]: Without dead ends: 12764 [2021-11-23 03:56:54,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:56:54,134 INFO L933 BasicCegarLoop]: 5624 mSDtfsCounter, 4647 mSDsluCounter, 10880 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4649 SdHoareTripleChecker+Valid, 15586 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:54,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4649 Valid, 15586 Invalid, 1424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1421 Invalid, 2 Unknown, 0 Unchecked, 20.7s Time] [2021-11-23 03:56:54,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12764 states. [2021-11-23 03:56:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12764 to 12755. [2021-11-23 03:56:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12755 states, 7565 states have (on average 1.2978189028420357) internal successors, (9818), 7921 states have internal predecessors, (9818), 4413 states have call successors, (4413), 780 states have call predecessors, (4413), 776 states have return successors, (4532), 4383 states have call predecessors, (4532), 4412 states have call successors, (4532) [2021-11-23 03:56:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12755 states to 12755 states and 18763 transitions. [2021-11-23 03:56:55,272 INFO L78 Accepts]: Start accepts. Automaton has 12755 states and 18763 transitions. Word has length 26 [2021-11-23 03:56:55,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:55,273 INFO L470 AbstractCegarLoop]: Abstraction has 12755 states and 18763 transitions. [2021-11-23 03:56:55,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:56:55,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12755 states and 18763 transitions. [2021-11-23 03:56:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-23 03:56:55,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:55,307 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:56:55,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:56:55,308 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:55,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:55,309 INFO L85 PathProgramCache]: Analyzing trace with hash -565499638, now seen corresponding path program 1 times [2021-11-23 03:56:55,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:55,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745043633] [2021-11-23 03:56:55,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:55,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:55,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:55,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745043633] [2021-11-23 03:56:55,868 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 03:56:55,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791554343] [2021-11-23 03:56:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:55,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:56:55,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:56:55,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:56:55,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:56:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:58,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 8932 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:56:58,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:56:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-23 03:56:59,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:56:59,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791554343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:59,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:59,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:56:59,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710259109] [2021-11-23 03:56:59,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:59,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:56:59,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:59,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:56:59,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:59,658 INFO L87 Difference]: Start difference. First operand 12755 states and 18763 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-23 03:57:03,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:08,863 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:57:11,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:17,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:19,896 INFO L93 Difference]: Finished difference Result 37691 states and 55450 transitions. [2021-11-23 03:57:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:57:19,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 145 [2021-11-23 03:57:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:20,114 INFO L225 Difference]: With dead ends: 37691 [2021-11-23 03:57:20,115 INFO L226 Difference]: Without dead ends: 24939 [2021-11-23 03:57:20,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:57:20,225 INFO L933 BasicCegarLoop]: 6886 mSDtfsCounter, 4420 mSDsluCounter, 4673 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4423 SdHoareTripleChecker+Valid, 11112 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:20,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4423 Valid, 11112 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1150 Invalid, 2 Unknown, 0 Unchecked, 19.5s Time] [2021-11-23 03:57:20,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24939 states. [2021-11-23 03:57:21,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24939 to 24928. [2021-11-23 03:57:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24928 states, 14815 states have (on average 1.2961187985150187) internal successors, (19202), 15522 states have internal predecessors, (19202), 8590 states have call successors, (8590), 1530 states have call predecessors, (8590), 1522 states have return successors, (8817), 8533 states have call predecessors, (8817), 8589 states have call successors, (8817) [2021-11-23 03:57:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24928 states to 24928 states and 36609 transitions. [2021-11-23 03:57:22,052 INFO L78 Accepts]: Start accepts. Automaton has 24928 states and 36609 transitions. Word has length 145 [2021-11-23 03:57:22,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:22,055 INFO L470 AbstractCegarLoop]: Abstraction has 24928 states and 36609 transitions. [2021-11-23 03:57:22,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-23 03:57:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 24928 states and 36609 transitions. [2021-11-23 03:57:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-23 03:57:22,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:22,105 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:57:22,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:57:22,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:57:22,321 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:57:22,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash -257181830, now seen corresponding path program 1 times [2021-11-23 03:57:22,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:22,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079896365] [2021-11-23 03:57:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:22,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:22,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:22,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079896365] [2021-11-23 03:57:22,792 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 03:57:22,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145482193] [2021-11-23 03:57:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:22,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:57:22,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:57:22,794 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:57:22,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:57:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:25,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 9087 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:57:25,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:57:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-23 03:57:26,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:57:26,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145482193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:26,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:26,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:57:26,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660175203] [2021-11-23 03:57:26,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:26,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:57:26,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:57:26,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:57:26,610 INFO L87 Difference]: Start difference. First operand 24928 states and 36609 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-23 03:57:31,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:57:37,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:41,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:42,423 INFO L93 Difference]: Finished difference Result 62417 states and 91674 transitions. [2021-11-23 03:57:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:57:42,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 171 [2021-11-23 03:57:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:42,667 INFO L225 Difference]: With dead ends: 62417 [2021-11-23 03:57:42,667 INFO L226 Difference]: Without dead ends: 37492 [2021-11-23 03:57:42,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:57:42,955 INFO L933 BasicCegarLoop]: 5338 mSDtfsCounter, 4580 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4582 SdHoareTripleChecker+Valid, 9541 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:42,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4582 Valid, 9541 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 964 Invalid, 1 Unknown, 0 Unchecked, 14.7s Time] [2021-11-23 03:57:43,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37492 states. [2021-11-23 03:57:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37492 to 37481. [2021-11-23 03:57:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37481 states, 22277 states have (on average 1.2961350271580554) internal successors, (28874), 23335 states have internal predecessors, (28874), 12907 states have call successors, (12907), 2308 states have call predecessors, (12907), 2296 states have return successors, (13242), 12823 states have call predecessors, (13242), 12906 states have call successors, (13242) [2021-11-23 03:57:45,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37481 states to 37481 states and 55023 transitions. [2021-11-23 03:57:45,548 INFO L78 Accepts]: Start accepts. Automaton has 37481 states and 55023 transitions. Word has length 171 [2021-11-23 03:57:45,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:45,550 INFO L470 AbstractCegarLoop]: Abstraction has 37481 states and 55023 transitions. [2021-11-23 03:57:45,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-23 03:57:45,551 INFO L276 IsEmpty]: Start isEmpty. Operand 37481 states and 55023 transitions. [2021-11-23 03:57:45,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-23 03:57:45,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:45,592 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:57:45,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:57:45,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:57:45,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:57:45,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:45,820 INFO L85 PathProgramCache]: Analyzing trace with hash -8295972, now seen corresponding path program 1 times [2021-11-23 03:57:45,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:45,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519183048] [2021-11-23 03:57:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:45,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:46,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:46,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519183048] [2021-11-23 03:57:46,483 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 03:57:46,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815069528] [2021-11-23 03:57:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:46,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:57:46,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:57:46,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:57:46,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:57:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:48,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 9087 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:57:48,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:57:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-23 03:57:50,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:57:50,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815069528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:50,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:50,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:57:50,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569458525] [2021-11-23 03:57:50,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:50,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:57:50,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:50,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:57:50,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:57:50,202 INFO L87 Difference]: Start difference. First operand 37481 states and 55023 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 03:57:57,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:58:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:58:07,994 INFO L93 Difference]: Finished difference Result 74982 states and 110073 transitions. [2021-11-23 03:58:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:58:07,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 171 [2021-11-23 03:58:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:58:08,284 INFO L225 Difference]: With dead ends: 74982 [2021-11-23 03:58:08,285 INFO L226 Difference]: Without dead ends: 37495 [2021-11-23 03:58:08,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:58:08,440 INFO L933 BasicCegarLoop]: 4281 mSDtfsCounter, 10 mSDsluCounter, 9459 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12840 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:58:08,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 12840 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1364 Invalid, 1 Unknown, 0 Unchecked, 16.2s Time] [2021-11-23 03:58:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37495 states. [2021-11-23 03:58:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37495 to 37484. [2021-11-23 03:58:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37484 states, 22280 states have (on average 1.2959605026929981) internal successors, (28874), 23338 states have internal predecessors, (28874), 12907 states have call successors, (12907), 2308 states have call predecessors, (12907), 2296 states have return successors, (13242), 12823 states have call predecessors, (13242), 12906 states have call successors, (13242) [2021-11-23 03:58:10,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37484 states to 37484 states and 55023 transitions. [2021-11-23 03:58:10,624 INFO L78 Accepts]: Start accepts. Automaton has 37484 states and 55023 transitions. Word has length 171 [2021-11-23 03:58:10,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:58:10,625 INFO L470 AbstractCegarLoop]: Abstraction has 37484 states and 55023 transitions. [2021-11-23 03:58:10,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 03:58:10,625 INFO L276 IsEmpty]: Start isEmpty. Operand 37484 states and 55023 transitions. [2021-11-23 03:58:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-23 03:58:10,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:58:10,665 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:58:10,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:58:10,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:58:10,880 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:58:11,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:58:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash -953172057, now seen corresponding path program 1 times [2021-11-23 03:58:11,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:58:11,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542441612] [2021-11-23 03:58:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:11,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:58:11,425 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:58:11,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973951428] [2021-11-23 03:58:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:11,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:58:11,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:58:11,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:58:11,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:58:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:58:13,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 9194 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:58:13,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:58:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-23 03:58:15,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:58:15,102 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:58:15,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542441612] [2021-11-23 03:58:15,102 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:58:15,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973951428] [2021-11-23 03:58:15,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973951428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:58:15,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:58:15,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:58:15,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600422599] [2021-11-23 03:58:15,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:58:15,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:58:15,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:58:15,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:58:15,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:58:15,105 INFO L87 Difference]: Start difference. First operand 37484 states and 55023 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:58:23,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:58:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:58:36,015 INFO L93 Difference]: Finished difference Result 62661 states and 91908 transitions. [2021-11-23 03:58:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:58:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 182 [2021-11-23 03:58:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:58:36,156 INFO L225 Difference]: With dead ends: 62661 [2021-11-23 03:58:36,156 INFO L226 Difference]: Without dead ends: 25156 [2021-11-23 03:58:36,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:58:36,506 INFO L933 BasicCegarLoop]: 4282 mSDtfsCounter, 22 mSDsluCounter, 14187 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 17119 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:58:36,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 17119 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1822 Invalid, 1 Unknown, 0 Unchecked, 19.8s Time] [2021-11-23 03:58:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25156 states. [2021-11-23 03:58:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25156 to 25096. [2021-11-23 03:58:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25096 states, 14915 states have (on average 1.2950050284948038) internal successors, (19315), 15636 states have internal predecessors, (19315), 8624 states have call successors, (8624), 1563 states have call predecessors, (8624), 1556 states have return successors, (8845), 8565 states have call predecessors, (8845), 8623 states have call successors, (8845) [2021-11-23 03:58:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25096 states to 25096 states and 36784 transitions. [2021-11-23 03:58:37,713 INFO L78 Accepts]: Start accepts. Automaton has 25096 states and 36784 transitions. Word has length 182 [2021-11-23 03:58:37,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:58:37,713 INFO L470 AbstractCegarLoop]: Abstraction has 25096 states and 36784 transitions. [2021-11-23 03:58:37,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:58:37,714 INFO L276 IsEmpty]: Start isEmpty. Operand 25096 states and 36784 transitions. [2021-11-23 03:58:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-23 03:58:37,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:58:37,758 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:58:37,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:58:37,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:58:37,984 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:58:37,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:58:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1590908263, now seen corresponding path program 1 times [2021-11-23 03:58:37,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:58:37,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84652324] [2021-11-23 03:58:37,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:37,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:58:38,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:58:38,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755917478] [2021-11-23 03:58:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:38,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:58:38,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:58:38,383 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:58:38,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:58:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:58:40,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 9212 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 03:58:40,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:58:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 40 proven. 16 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-23 03:58:43,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:58:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-23 03:58:46,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:58:46,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84652324] [2021-11-23 03:58:46,456 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:58:46,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755917478] [2021-11-23 03:58:46,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755917478] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:58:46,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:58:46,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-23 03:58:46,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137484575] [2021-11-23 03:58:46,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:58:46,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:58:46,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:58:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:58:46,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:58:46,458 INFO L87 Difference]: Start difference. First operand 25096 states and 36784 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 03:58:51,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:59:02,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 03:59:27,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:59:39,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:59:44,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:59:48,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:59:51,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:59:55,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:00:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:00,558 INFO L93 Difference]: Finished difference Result 39220 states and 57811 transitions. [2021-11-23 04:00:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 04:00:00,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 182 [2021-11-23 04:00:00,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:00,855 INFO L225 Difference]: With dead ends: 39220 [2021-11-23 04:00:00,856 INFO L226 Difference]: Without dead ends: 39200 [2021-11-23 04:00:00,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 04:00:00,877 INFO L933 BasicCegarLoop]: 4985 mSDtfsCounter, 8967 mSDsluCounter, 7328 mSDsCounter, 0 mSdLazyCounter, 6773 mSolverCounterSat, 3301 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9916 SdHoareTripleChecker+Valid, 11585 SdHoareTripleChecker+Invalid, 10078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3301 IncrementalHoareTripleChecker+Valid, 6773 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.5s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:00,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9916 Valid, 11585 Invalid, 10078 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3301 Valid, 6773 Invalid, 4 Unknown, 0 Unchecked, 72.5s Time] [2021-11-23 04:00:00,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39200 states. [2021-11-23 04:00:02,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39200 to 39164. [2021-11-23 04:00:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39164 states, 23246 states have (on average 1.2914049728985633) internal successors, (30020), 24340 states have internal predecessors, (30020), 13479 states have call successors, (13479), 2328 states have call predecessors, (13479), 2438 states have return successors, (14237), 13528 states have call predecessors, (14237), 13478 states have call successors, (14237) [2021-11-23 04:00:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39164 states to 39164 states and 57736 transitions. [2021-11-23 04:00:03,056 INFO L78 Accepts]: Start accepts. Automaton has 39164 states and 57736 transitions. Word has length 182 [2021-11-23 04:00:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:03,057 INFO L470 AbstractCegarLoop]: Abstraction has 39164 states and 57736 transitions. [2021-11-23 04:00:03,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-23 04:00:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 39164 states and 57736 transitions. [2021-11-23 04:00:03,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-23 04:00:03,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:03,094 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 04:00:03,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 04:00:03,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 04:00:03,309 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 04:00:03,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1149690721, now seen corresponding path program 1 times [2021-11-23 04:00:03,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:03,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877038592] [2021-11-23 04:00:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:03,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:03,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 04:00:03,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876422183] [2021-11-23 04:00:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:03,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 04:00:03,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 04:00:03,840 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 04:00:03,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 04:00:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:06,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 9217 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 04:00:06,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 04:00:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-11-23 04:00:06,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 04:00:06,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:06,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877038592] [2021-11-23 04:00:06,584 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 04:00:06,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876422183] [2021-11-23 04:00:06,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876422183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:00:06,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:00:06,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 04:00:06,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869534960] [2021-11-23 04:00:06,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:06,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 04:00:06,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:06,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 04:00:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:00:06,587 INFO L87 Difference]: Start difference. First operand 39164 states and 57736 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 04:00:10,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:00:14,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 04:00:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:00:22,204 INFO L93 Difference]: Finished difference Result 53555 states and 79443 transitions. [2021-11-23 04:00:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 04:00:22,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 185 [2021-11-23 04:00:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:00:22,551 INFO L225 Difference]: With dead ends: 53555 [2021-11-23 04:00:22,551 INFO L226 Difference]: Without dead ends: 39176 [2021-11-23 04:00:22,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:00:22,624 INFO L933 BasicCegarLoop]: 4283 mSDtfsCounter, 4 mSDsluCounter, 4726 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8560 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-11-23 04:00:22,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 8560 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 902 Invalid, 2 Unknown, 0 Unchecked, 14.5s Time] [2021-11-23 04:00:22,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39176 states. [2021-11-23 04:00:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39176 to 39176. [2021-11-23 04:00:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39176 states, 23258 states have (on average 1.2912546220655259) internal successors, (30032), 24352 states have internal predecessors, (30032), 13479 states have call successors, (13479), 2328 states have call predecessors, (13479), 2438 states have return successors, (14237), 13528 states have call predecessors, (14237), 13478 states have call successors, (14237) [2021-11-23 04:00:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39176 states to 39176 states and 57748 transitions. [2021-11-23 04:00:24,433 INFO L78 Accepts]: Start accepts. Automaton has 39176 states and 57748 transitions. Word has length 185 [2021-11-23 04:00:24,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:00:24,434 INFO L470 AbstractCegarLoop]: Abstraction has 39176 states and 57748 transitions. [2021-11-23 04:00:24,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 04:00:24,435 INFO L276 IsEmpty]: Start isEmpty. Operand 39176 states and 57748 transitions. [2021-11-23 04:00:24,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-23 04:00:24,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:00:24,453 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 04:00:24,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 04:00:24,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 04:00:24,680 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 04:00:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:00:24,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1860082350, now seen corresponding path program 1 times [2021-11-23 04:00:24,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:00:24,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087315010] [2021-11-23 04:00:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:24,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:00:25,122 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 04:00:25,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955024276] [2021-11-23 04:00:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:00:25,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 04:00:25,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 04:00:25,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 04:00:25,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 04:00:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:00:27,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 9225 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 04:00:27,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 04:00:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 52 proven. 16 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-23 04:00:29,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 04:00:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-23 04:00:33,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:00:33,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087315010] [2021-11-23 04:00:33,651 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 04:00:33,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955024276] [2021-11-23 04:00:33,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955024276] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 04:00:33,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 04:00:33,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-23 04:00:33,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740712584] [2021-11-23 04:00:33,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:00:33,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 04:00:33,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:00:33,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 04:00:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 04:00:33,653 INFO L87 Difference]: Start difference. First operand 39176 states and 57748 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-23 04:00:50,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 04:01:32,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:01:41,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:01:44,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:01:51,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:02:01,845 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:02:11,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:02:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:02:18,117 INFO L93 Difference]: Finished difference Result 113359 states and 169132 transitions. [2021-11-23 04:02:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 04:02:18,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 186 [2021-11-23 04:02:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:02:18,677 INFO L225 Difference]: With dead ends: 113359 [2021-11-23 04:02:18,677 INFO L226 Difference]: Without dead ends: 74110 [2021-11-23 04:02:18,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-23 04:02:18,878 INFO L933 BasicCegarLoop]: 5085 mSDtfsCounter, 7387 mSDsluCounter, 4469 mSDsCounter, 0 mSdLazyCounter, 10896 mSolverCounterSat, 1626 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8469 SdHoareTripleChecker+Valid, 8921 SdHoareTripleChecker+Invalid, 12525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1626 IncrementalHoareTripleChecker+Valid, 10896 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.0s IncrementalHoareTripleChecker+Time [2021-11-23 04:02:18,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8469 Valid, 8921 Invalid, 12525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1626 Valid, 10896 Invalid, 3 Unknown, 0 Unchecked, 101.0s Time] [2021-11-23 04:02:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74110 states. [2021-11-23 04:02:22,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74110 to 73185. [2021-11-23 04:02:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73185 states, 43350 states have (on average 1.285674740484429) internal successors, (55734), 45372 states have internal predecessors, (55734), 25243 states have call successors, (25243), 3945 states have call predecessors, (25243), 4591 states have return successors, (28152), 25833 states have call predecessors, (28152), 25242 states have call successors, (28152) [2021-11-23 04:02:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73185 states to 73185 states and 109129 transitions. [2021-11-23 04:02:23,070 INFO L78 Accepts]: Start accepts. Automaton has 73185 states and 109129 transitions. Word has length 186 [2021-11-23 04:02:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:02:23,070 INFO L470 AbstractCegarLoop]: Abstraction has 73185 states and 109129 transitions. [2021-11-23 04:02:23,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-23 04:02:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 73185 states and 109129 transitions. [2021-11-23 04:02:23,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-23 04:02:23,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:02:23,098 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 04:02:23,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 04:02:23,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 04:02:23,312 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 04:02:23,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:02:23,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1811702728, now seen corresponding path program 1 times [2021-11-23 04:02:23,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:02:23,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131312400] [2021-11-23 04:02:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:23,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:02:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:23,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:23,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131312400] [2021-11-23 04:02:23,869 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 04:02:23,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325270535] [2021-11-23 04:02:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:23,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 04:02:23,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 04:02:23,870 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 04:02:23,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 04:02:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:26,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 9518 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 04:02:26,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 04:02:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-23 04:02:27,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 04:02:27,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325270535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:27,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:27,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 04:02:27,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873075790] [2021-11-23 04:02:27,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:27,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 04:02:27,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 04:02:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:02:27,968 INFO L87 Difference]: Start difference. First operand 73185 states and 109129 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-23 04:02:34,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 04:02:42,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:02:48,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:02:48,395 INFO L93 Difference]: Finished difference Result 157837 states and 235023 transitions. [2021-11-23 04:02:48,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 04:02:48,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 224 [2021-11-23 04:02:48,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:02:49,032 INFO L225 Difference]: With dead ends: 157837 [2021-11-23 04:02:49,032 INFO L226 Difference]: Without dead ends: 84655 [2021-11-23 04:02:49,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:02:49,453 INFO L933 BasicCegarLoop]: 5796 mSDtfsCounter, 3505 mSDsluCounter, 4718 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3507 SdHoareTripleChecker+Valid, 10069 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2021-11-23 04:02:49,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3507 Valid, 10069 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1040 Invalid, 2 Unknown, 0 Unchecked, 16.8s Time] [2021-11-23 04:02:49,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84655 states. [2021-11-23 04:02:53,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84655 to 84503. [2021-11-23 04:02:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84503 states, 50256 states have (on average 1.287448264883795) internal successors, (64702), 52510 states have internal predecessors, (64702), 28850 states have call successors, (28850), 4633 states have call predecessors, (28850), 5396 states have return successors, (32144), 29583 states have call predecessors, (32144), 28849 states have call successors, (32144) [2021-11-23 04:02:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84503 states to 84503 states and 125696 transitions. [2021-11-23 04:02:54,194 INFO L78 Accepts]: Start accepts. Automaton has 84503 states and 125696 transitions. Word has length 224 [2021-11-23 04:02:54,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:02:54,196 INFO L470 AbstractCegarLoop]: Abstraction has 84503 states and 125696 transitions. [2021-11-23 04:02:54,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-23 04:02:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand 84503 states and 125696 transitions. [2021-11-23 04:02:54,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-23 04:02:54,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:02:54,249 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 04:02:54,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 04:02:54,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 04:02:54,476 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 04:02:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:02:54,477 INFO L85 PathProgramCache]: Analyzing trace with hash -29418481, now seen corresponding path program 1 times [2021-11-23 04:02:54,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:02:54,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363537578] [2021-11-23 04:02:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:54,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:02:54,689 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 04:02:54,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636922066] [2021-11-23 04:02:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:02:54,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 04:02:54,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 04:02:54,691 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 04:02:54,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 04:02:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 04:02:57,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 9798 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 04:02:57,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 04:02:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-23 04:02:58,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 04:02:58,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 04:02:58,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363537578] [2021-11-23 04:02:58,165 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 04:02:58,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636922066] [2021-11-23 04:02:58,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636922066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 04:02:58,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 04:02:58,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 04:02:58,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327892124] [2021-11-23 04:02:58,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 04:02:58,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 04:02:58,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 04:02:58,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 04:02:58,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:02:58,168 INFO L87 Difference]: Start difference. First operand 84503 states and 125696 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 04:03:02,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:03:06,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 04:03:10,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 04:03:17,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 04:03:17,536 INFO L93 Difference]: Finished difference Result 169351 states and 252311 transitions. [2021-11-23 04:03:17,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 04:03:17,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 261 [2021-11-23 04:03:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 04:03:18,258 INFO L225 Difference]: With dead ends: 169351 [2021-11-23 04:03:18,258 INFO L226 Difference]: Without dead ends: 84926 [2021-11-23 04:03:18,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 04:03:18,571 INFO L933 BasicCegarLoop]: 4309 mSDtfsCounter, 51 mSDsluCounter, 4684 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 8547 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2021-11-23 04:03:18,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 8547 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 906 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2021-11-23 04:03:18,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84926 states. [2021-11-23 04:03:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84926 to 84593. [2021-11-23 04:03:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84593 states, 50331 states have (on average 1.287317955136993) internal successors, (64792), 52585 states have internal predecessors, (64792), 28865 states have call successors, (28865), 4633 states have call predecessors, (28865), 5396 states have return successors, (32159), 29598 states have call predecessors, (32159), 28864 states have call successors, (32159) [2021-11-23 04:03:23,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84593 states to 84593 states and 125816 transitions. [2021-11-23 04:03:23,112 INFO L78 Accepts]: Start accepts. Automaton has 84593 states and 125816 transitions. Word has length 261 [2021-11-23 04:03:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 04:03:23,113 INFO L470 AbstractCegarLoop]: Abstraction has 84593 states and 125816 transitions. [2021-11-23 04:03:23,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-23 04:03:23,114 INFO L276 IsEmpty]: Start isEmpty. Operand 84593 states and 125816 transitions. [2021-11-23 04:03:23,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-23 04:03:23,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 04:03:23,158 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 04:03:23,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 04:03:23,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 04:03:23,384 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 04:03:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 04:03:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1227939641, now seen corresponding path program 1 times [2021-11-23 04:03:23,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 04:03:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929515352] [2021-11-23 04:03:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:03:23,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 04:03:23,586 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 04:03:23,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379473724] [2021-11-23 04:03:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 04:03:23,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 04:03:23,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 04:03:23,588 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 04:03:23,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55e5ea07-be11-43d1-845e-02073e16015b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process