./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--rtl818x--rtl8180--rtl818x_pci.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_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/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_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/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--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/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_a44aef86-ed38-412c-a198-fc8ab20eb8f1/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 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:30:00,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:30:00,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:30:00,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:30:00,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:30:00,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:30:00,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:30:00,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:30:00,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:30:00,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:30:00,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:30:00,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:30:00,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:30:00,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:30:00,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:30:00,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:30:00,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:30:00,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:30:00,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:30:00,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:30:00,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:30:00,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:30:00,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:30:00,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:30:00,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:30:00,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:30:00,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:30:00,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:30:00,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:30:00,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:30:00,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:30:00,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:30:00,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:30:00,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:30:00,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:30:00,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:30:00,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:30:00,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:30:00,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:30:00,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:30:00,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:30:00,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:30:00,282 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:30:00,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:30:00,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:30:00,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:30:00,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:30:00,284 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:30:00,284 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:30:00,285 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:30:00,285 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:30:00,285 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:30:00,285 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:30:00,286 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:30:00,286 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:30:00,286 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:30:00,286 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:30:00,287 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:30:00,287 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:30:00,287 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:30:00,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:30:00,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:30:00,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:30:00,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:30:00,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:30:00,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:30:00,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:30:00,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:30:00,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:30:00,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:30:00,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:30:00,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:30:00,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:30:00,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:30:00,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:30:00,292 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:30:00,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:30:00,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:30:00,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:30:00,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:30:00,293 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_a44aef86-ed38-412c-a198-fc8ab20eb8f1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 [2021-11-23 02:30:00,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:30:00,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:30:00,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:30:00,701 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:30:00,702 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:30:00,704 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/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--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-23 02:30:00,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/data/8f626fc6a/85a560d517964f8aa103c4cd65ea7501/FLAGd00cb6926 [2021-11-23 02:30:02,099 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:30:02,100 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-23 02:30:02,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/data/8f626fc6a/85a560d517964f8aa103c4cd65ea7501/FLAGd00cb6926 [2021-11-23 02:30:02,257 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/data/8f626fc6a/85a560d517964f8aa103c4cd65ea7501 [2021-11-23 02:30:02,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:30:02,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:30:02,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:30:02,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:30:02,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:30:02,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:02" (1/1) ... [2021-11-23 02:30:02,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3799dafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:02, skipping insertion in model container [2021-11-23 02:30:02,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:02" (1/1) ... [2021-11-23 02:30:02,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:30:02,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:30:04,246 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_a44aef86-ed38-412c-a198-fc8ab20eb8f1/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-11-23 02:30:06,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:30:06,434 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:30:06,669 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_a44aef86-ed38-412c-a198-fc8ab20eb8f1/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-11-23 02:30:07,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:30:07,256 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:30:07,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07 WrapperNode [2021-11-23 02:30:07,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:30:07,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:30:07,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:30:07,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:30:07,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (1/1) ... [2021-11-23 02:30:07,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (1/1) ... [2021-11-23 02:30:07,864 INFO L137 Inliner]: procedures = 382, calls = 4296, calls flagged for inlining = 180, calls inlined = 177, statements flattened = 8043 [2021-11-23 02:30:07,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:30:07,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:30:07,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:30:07,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:30:07,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (1/1) ... [2021-11-23 02:30:07,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (1/1) ... [2021-11-23 02:30:07,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (1/1) ... [2021-11-23 02:30:07,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (1/1) ... [2021-11-23 02:30:08,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (1/1) ... [2021-11-23 02:30:08,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (1/1) ... [2021-11-23 02:30:08,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (1/1) ... [2021-11-23 02:30:08,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:30:08,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:30:08,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:30:08,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:30:08,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (1/1) ... [2021-11-23 02:30:08,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:30:08,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:08,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:30:08,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:30:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2021-11-23 02:30:08,369 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2021-11-23 02:30:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_12 [2021-11-23 02:30:08,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_12 [2021-11-23 02:30:08,369 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-23 02:30:08,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-23 02:30:08,370 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:30:08,370 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:30:08,370 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2021-11-23 02:30:08,370 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2021-11-23 02:30:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2021-11-23 02:30:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2021-11-23 02:30:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2021-11-23 02:30:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2021-11-23 02:30:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:30:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:30:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2021-11-23 02:30:08,372 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2021-11-23 02:30:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:30:08,372 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:30:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:30:08,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:30:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-23 02:30:08,374 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-23 02:30:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 02:30:08,374 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 02:30:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2021-11-23 02:30:08,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2021-11-23 02:30:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2021-11-23 02:30:08,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2021-11-23 02:30:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3 [2021-11-23 02:30:08,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3 [2021-11-23 02:30:08,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:30:08,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:30:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2021-11-23 02:30:08,376 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2021-11-23 02:30:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2021-11-23 02:30:08,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2021-11-23 02:30:08,376 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2021-11-23 02:30:08,377 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2021-11-23 02:30:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2021-11-23 02:30:08,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2021-11-23 02:30:08,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2021-11-23 02:30:08,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2021-11-23 02:30:08,378 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2021-11-23 02:30:08,378 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2021-11-23 02:30:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2021-11-23 02:30:08,379 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2021-11-23 02:30:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2021-11-23 02:30:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2021-11-23 02:30:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2021-11-23 02:30:08,381 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2021-11-23 02:30:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-23 02:30:08,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-23 02:30:08,382 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2021-11-23 02:30:08,382 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2021-11-23 02:30:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-23 02:30:08,383 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-23 02:30:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2021-11-23 02:30:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2021-11-23 02:30:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:30:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:30:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 02:30:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 02:30:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:30:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:30:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2021-11-23 02:30:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2021-11-23 02:30:08,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:30:08,386 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:30:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-23 02:30:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-23 02:30:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:30:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:30:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-11-23 02:30:08,461 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-11-23 02:30:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2021-11-23 02:30:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2021-11-23 02:30:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 02:30:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 02:30:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-23 02:30:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-23 02:30:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:30:08,462 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:30:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2021-11-23 02:30:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2021-11-23 02:30:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2021-11-23 02:30:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2021-11-23 02:30:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:30:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2021-11-23 02:30:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2021-11-23 02:30:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2021-11-23 02:30:08,463 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2021-11-23 02:30:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2021-11-23 02:30:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2021-11-23 02:30:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:30:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2021-11-23 02:30:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2021-11-23 02:30:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-23 02:30:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-23 02:30:08,464 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2021-11-23 02:30:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2021-11-23 02:30:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2021-11-23 02:30:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2021-11-23 02:30:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-23 02:30:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2021-11-23 02:30:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2021-11-23 02:30:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:30:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:30:08,465 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:30:08,465 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:30:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:30:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:30:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2021-11-23 02:30:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2021-11-23 02:30:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2021-11-23 02:30:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2021-11-23 02:30:08,466 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2021-11-23 02:30:08,466 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2021-11-23 02:30:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 02:30:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 02:30:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___skb_dequeue_14 [2021-11-23 02:30:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___skb_dequeue_14 [2021-11-23 02:30:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:30:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:30:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2021-11-23 02:30:08,467 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2021-11-23 02:30:08,467 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2021-11-23 02:30:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2021-11-23 02:30:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:30:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:30:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:30:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2021-11-23 02:30:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2021-11-23 02:30:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:30:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:30:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 02:30:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 02:30:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2021-11-23 02:30:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2021-11-23 02:30:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:30:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2021-11-23 02:30:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2021-11-23 02:30:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2021-11-23 02:30:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2021-11-23 02:30:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2021-11-23 02:30:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2021-11-23 02:30:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:30:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:30:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:30:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2021-11-23 02:30:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2021-11-23 02:30:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2021-11-23 02:30:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2021-11-23 02:30:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:30:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:30:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-23 02:30:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-23 02:30:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-23 02:30:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-23 02:30:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2021-11-23 02:30:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2021-11-23 02:30:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2021-11-23 02:30:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2021-11-23 02:30:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-23 02:30:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-23 02:30:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-23 02:30:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-23 02:30:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2021-11-23 02:30:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2021-11-23 02:30:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2021-11-23 02:30:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2021-11-23 02:30:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2021-11-23 02:30:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2021-11-23 02:30:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:30:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:30:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:30:08,473 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:30:08,475 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:30:08,475 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2021-11-23 02:30:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2021-11-23 02:30:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2021-11-23 02:30:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2021-11-23 02:30:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2021-11-23 02:30:08,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2021-11-23 02:30:08,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:30:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:30:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2021-11-23 02:30:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2021-11-23 02:30:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-23 02:30:08,477 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2021-11-23 02:30:08,477 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2021-11-23 02:30:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2021-11-23 02:30:08,478 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2021-11-23 02:30:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2021-11-23 02:30:08,478 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2021-11-23 02:30:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:30:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:30:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-23 02:30:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-23 02:30:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-23 02:30:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-23 02:30:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2021-11-23 02:30:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2021-11-23 02:30:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:30:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:30:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:30:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-23 02:30:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-23 02:30:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_RXCB [2021-11-23 02:30:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_RXCB [2021-11-23 02:30:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:30:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:30:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-23 02:30:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-23 02:30:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2021-11-23 02:30:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2021-11-23 02:30:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2021-11-23 02:30:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2021-11-23 02:30:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-11-23 02:30:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-11-23 02:30:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2021-11-23 02:30:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2021-11-23 02:30:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2021-11-23 02:30:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2021-11-23 02:30:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2021-11-23 02:30:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2021-11-23 02:30:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 02:30:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 02:30:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 02:30:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 02:30:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:30:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:30:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2021-11-23 02:30:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2021-11-23 02:30:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2021-11-23 02:30:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2021-11-23 02:30:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2021-11-23 02:30:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2021-11-23 02:30:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2021-11-23 02:30:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2021-11-23 02:30:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2021-11-23 02:30:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2021-11-23 02:30:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2021-11-23 02:30:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2021-11-23 02:30:08,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:30:08,487 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2021-11-23 02:30:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2021-11-23 02:30:08,487 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2021-11-23 02:30:08,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2021-11-23 02:30:08,488 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2021-11-23 02:30:08,488 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2021-11-23 02:30:08,488 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2021-11-23 02:30:08,488 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2021-11-23 02:30:08,488 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2021-11-23 02:30:08,489 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2021-11-23 02:30:08,489 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-23 02:30:08,489 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-23 02:30:08,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-23 02:30:08,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:30:08,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:30:08,490 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-23 02:30:08,490 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-23 02:30:09,671 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:30:09,674 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:30:09,989 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:30:20,030 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:30:22,372 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:30:22,372 INFO L301 CfgBuilder]: Removed 81 assume(true) statements. [2021-11-23 02:30:22,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:22 BoogieIcfgContainer [2021-11-23 02:30:22,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:30:22,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:30:22,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:30:22,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:30:22,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:30:02" (1/3) ... [2021-11-23 02:30:22,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197fb7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:22, skipping insertion in model container [2021-11-23 02:30:22,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:07" (2/3) ... [2021-11-23 02:30:22,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197fb7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:22, skipping insertion in model container [2021-11-23 02:30:22,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:22" (3/3) ... [2021-11-23 02:30:22,391 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-23 02:30:22,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:30:22,398 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:30:22,468 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:30:22,475 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:30:22,476 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:30:22,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 3174 states, 1626 states have (on average 1.3105781057810577) internal successors, (2131), 1781 states have internal predecessors, (2131), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) [2021-11-23 02:30:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 02:30:22,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:22,614 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-23 02:30:22,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash 540936489, now seen corresponding path program 1 times [2021-11-23 02:30:22,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:22,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277662183] [2021-11-23 02:30:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:22,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-23 02:30:23,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:23,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277662183] [2021-11-23 02:30:23,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277662183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:23,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:23,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:30:23,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110914748] [2021-11-23 02:30:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:23,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:30:23,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:23,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:30:23,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:23,653 INFO L87 Difference]: Start difference. First operand has 3174 states, 1626 states have (on average 1.3105781057810577) internal successors, (2131), 1781 states have internal predecessors, (2131), 1503 states have call successors, (1503), 122 states have call predecessors, (1503), 121 states have return successors, (1489), 1454 states have call predecessors, (1489), 1489 states have call successors, (1489) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-23 02:30:28,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:30:30,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:31,945 INFO L93 Difference]: Finished difference Result 8979 states and 14569 transitions. [2021-11-23 02:30:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:30:31,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 70 [2021-11-23 02:30:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:32,071 INFO L225 Difference]: With dead ends: 8979 [2021-11-23 02:30:32,072 INFO L226 Difference]: Without dead ends: 5786 [2021-11-23 02:30:32,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:32,132 INFO L933 BasicCegarLoop]: 5810 mSDtfsCounter, 4557 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 10219 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:32,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4560 Valid, 10219 Invalid, 484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 473 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-11-23 02:30:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2021-11-23 02:30:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5785. [2021-11-23 02:30:33,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 2745 states have (on average 1.2932604735883424) internal successors, (3550), 2886 states have internal predecessors, (3550), 2799 states have call successors, (2799), 241 states have call predecessors, (2799), 240 states have return successors, (2801), 2727 states have call predecessors, (2801), 2798 states have call successors, (2801) [2021-11-23 02:30:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 9150 transitions. [2021-11-23 02:30:33,557 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 9150 transitions. Word has length 70 [2021-11-23 02:30:33,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:33,558 INFO L470 AbstractCegarLoop]: Abstraction has 5785 states and 9150 transitions. [2021-11-23 02:30:33,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-23 02:30:33,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 9150 transitions. [2021-11-23 02:30:33,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:30:33,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:33,568 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-23 02:30:33,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:30:33,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:33,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:33,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1939261110, now seen corresponding path program 1 times [2021-11-23 02:30:33,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:33,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968857468] [2021-11-23 02:30:33,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:33,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-23 02:30:34,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:34,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968857468] [2021-11-23 02:30:34,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968857468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:34,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:34,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:30:34,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270354465] [2021-11-23 02:30:34,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:34,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:30:34,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:34,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:30:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:30:34,046 INFO L87 Difference]: Start difference. First operand 5785 states and 9150 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-23 02:30:38,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:41,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:30:43,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:43,699 INFO L93 Difference]: Finished difference Result 11526 states and 18318 transitions. [2021-11-23 02:30:43,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:30:43,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2021-11-23 02:30:43,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:43,855 INFO L225 Difference]: With dead ends: 11526 [2021-11-23 02:30:43,855 INFO L226 Difference]: Without dead ends: 11521 [2021-11-23 02:30:43,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:30:43,870 INFO L933 BasicCegarLoop]: 5999 mSDtfsCounter, 4558 mSDsluCounter, 10859 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 16388 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:43,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4560 Valid, 16388 Invalid, 748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 745 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-23 02:30:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2021-11-23 02:30:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 11510. [2021-11-23 02:30:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11510 states, 5453 states have (on average 1.2941500091692646) internal successors, (7057), 5736 states have internal predecessors, (7057), 5576 states have call successors, (5576), 481 states have call predecessors, (5576), 480 states have return successors, (5665), 5432 states have call predecessors, (5665), 5575 states have call successors, (5665) [2021-11-23 02:30:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11510 states to 11510 states and 18298 transitions. [2021-11-23 02:30:45,441 INFO L78 Accepts]: Start accepts. Automaton has 11510 states and 18298 transitions. Word has length 73 [2021-11-23 02:30:45,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:45,446 INFO L470 AbstractCegarLoop]: Abstraction has 11510 states and 18298 transitions. [2021-11-23 02:30:45,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-23 02:30:45,447 INFO L276 IsEmpty]: Start isEmpty. Operand 11510 states and 18298 transitions. [2021-11-23 02:30:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-23 02:30:45,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:45,475 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:45,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:30:45,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:45,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1057543957, now seen corresponding path program 1 times [2021-11-23 02:30:45,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:45,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915708649] [2021-11-23 02:30:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:45,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-23 02:30:45,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:45,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915708649] [2021-11-23 02:30:45,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915708649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:45,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:45,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:30:45,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591148684] [2021-11-23 02:30:45,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:45,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:30:45,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:30:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:45,986 INFO L87 Difference]: Start difference. First operand 11510 states and 18298 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:30:50,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:52,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:55,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:30:56,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:56,065 INFO L93 Difference]: Finished difference Result 31566 states and 50362 transitions. [2021-11-23 02:30:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:30:56,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2021-11-23 02:30:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:56,339 INFO L225 Difference]: With dead ends: 31566 [2021-11-23 02:30:56,339 INFO L226 Difference]: Without dead ends: 20075 [2021-11-23 02:30:56,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:56,486 INFO L933 BasicCegarLoop]: 5493 mSDtfsCounter, 3461 mSDsluCounter, 4521 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 9788 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:56,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3461 Valid, 9788 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 521 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2021-11-23 02:30:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20075 states. [2021-11-23 02:30:59,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20075 to 20068. [2021-11-23 02:30:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20068 states, 9193 states have (on average 1.2956597411073643) internal successors, (11911), 9642 states have internal predecessors, (11911), 10018 states have call successors, (10018), 857 states have call predecessors, (10018), 856 states have return successors, (10153), 9816 states have call predecessors, (10153), 10017 states have call successors, (10153) [2021-11-23 02:30:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20068 states to 20068 states and 32082 transitions. [2021-11-23 02:30:59,333 INFO L78 Accepts]: Start accepts. Automaton has 20068 states and 32082 transitions. Word has length 130 [2021-11-23 02:30:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:59,334 INFO L470 AbstractCegarLoop]: Abstraction has 20068 states and 32082 transitions. [2021-11-23 02:30:59,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-23 02:30:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 20068 states and 32082 transitions. [2021-11-23 02:30:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-23 02:30:59,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:59,361 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:59,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:30:59,362 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:59,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:59,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1365914298, now seen corresponding path program 1 times [2021-11-23 02:30:59,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:59,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252389280] [2021-11-23 02:30:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:59,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:59,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:30:59,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325640470] [2021-11-23 02:30:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:59,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:59,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:59,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:30:59,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:31:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:01,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 4720 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:31:01,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-23 02:31:01,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:31:01,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:01,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252389280] [2021-11-23 02:31:01,945 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:31:01,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325640470] [2021-11-23 02:31:01,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325640470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:01,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:01,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:31:01,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899784258] [2021-11-23 02:31:01,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:01,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:31:01,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:31:01,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:31:01,947 INFO L87 Difference]: Start difference. First operand 20068 states and 32082 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:31:09,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:12,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:31:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:19,930 INFO L93 Difference]: Finished difference Result 60153 states and 96202 transitions. [2021-11-23 02:31:19,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:31:19,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 152 [2021-11-23 02:31:19,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:20,384 INFO L225 Difference]: With dead ends: 60153 [2021-11-23 02:31:20,384 INFO L226 Difference]: Without dead ends: 40104 [2021-11-23 02:31:20,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:31:20,724 INFO L933 BasicCegarLoop]: 5789 mSDtfsCounter, 4517 mSDsluCounter, 8092 mSDsCounter, 0 mSdLazyCounter, 6535 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4526 SdHoareTripleChecker+Valid, 13205 SdHoareTripleChecker+Invalid, 6552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6535 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:20,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4526 Valid, 13205 Invalid, 6552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6535 Invalid, 2 Unknown, 0 Unchecked, 16.2s Time] [2021-11-23 02:31:20,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40104 states. [2021-11-23 02:31:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40104 to 40084. [2021-11-23 02:31:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40084 states, 18361 states have (on average 1.296007842710092) internal successors, (23796), 19260 states have internal predecessors, (23796), 20006 states have call successors, (20006), 1709 states have call predecessors, (20006), 1716 states have return successors, (20307), 19602 states have call predecessors, (20307), 20005 states have call successors, (20307) [2021-11-23 02:31:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40084 states to 40084 states and 64109 transitions. [2021-11-23 02:31:25,881 INFO L78 Accepts]: Start accepts. Automaton has 40084 states and 64109 transitions. Word has length 152 [2021-11-23 02:31:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:25,882 INFO L470 AbstractCegarLoop]: Abstraction has 40084 states and 64109 transitions. [2021-11-23 02:31:25,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:31:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 40084 states and 64109 transitions. [2021-11-23 02:31:25,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-23 02:31:25,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:25,903 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:25,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 02:31:26,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:31:26,108 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:26,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:26,109 INFO L85 PathProgramCache]: Analyzing trace with hash -389926971, now seen corresponding path program 1 times [2021-11-23 02:31:26,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:26,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167924842] [2021-11-23 02:31:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:26,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:26,323 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:31:26,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039596683] [2021-11-23 02:31:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:26,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:31:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:31:26,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:31:26,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:31:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:27,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 4722 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:31:27,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-23 02:31:28,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:31:28,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:28,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167924842] [2021-11-23 02:31:28,481 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:31:28,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039596683] [2021-11-23 02:31:28,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039596683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:28,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:28,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:31:28,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242899510] [2021-11-23 02:31:28,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:28,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:31:28,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:28,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:31:28,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:31:28,483 INFO L87 Difference]: Start difference. First operand 40084 states and 64109 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:31:38,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:31:40,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:47,467 INFO L93 Difference]: Finished difference Result 80201 states and 128249 transitions. [2021-11-23 02:31:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:31:47,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2021-11-23 02:31:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:48,041 INFO L225 Difference]: With dead ends: 80201 [2021-11-23 02:31:48,042 INFO L226 Difference]: Without dead ends: 40136 [2021-11-23 02:31:48,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:31:48,284 INFO L933 BasicCegarLoop]: 5793 mSDtfsCounter, 4529 mSDsluCounter, 8103 mSDsCounter, 0 mSdLazyCounter, 6552 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4536 SdHoareTripleChecker+Valid, 13217 SdHoareTripleChecker+Invalid, 6568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6552 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:48,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4536 Valid, 13217 Invalid, 6568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6552 Invalid, 1 Unknown, 0 Unchecked, 16.7s Time] [2021-11-23 02:31:48,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40136 states. [2021-11-23 02:31:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40136 to 40118. [2021-11-23 02:31:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40118 states, 18379 states have (on average 1.2957179389520648) internal successors, (23814), 19280 states have internal predecessors, (23814), 20014 states have call successors, (20014), 1715 states have call predecessors, (20014), 1724 states have return successors, (20303), 19610 states have call predecessors, (20303), 20013 states have call successors, (20303) [2021-11-23 02:31:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40118 states to 40118 states and 64131 transitions. [2021-11-23 02:31:52,086 INFO L78 Accepts]: Start accepts. Automaton has 40118 states and 64131 transitions. Word has length 153 [2021-11-23 02:31:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:52,088 INFO L470 AbstractCegarLoop]: Abstraction has 40118 states and 64131 transitions. [2021-11-23 02:31:52,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:31:52,088 INFO L276 IsEmpty]: Start isEmpty. Operand 40118 states and 64131 transitions. [2021-11-23 02:31:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-23 02:31:52,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:52,109 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:52,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:52,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:31:52,325 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:52,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2054849153, now seen corresponding path program 1 times [2021-11-23 02:31:52,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:52,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996606145] [2021-11-23 02:31:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:52,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:52,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:31:52,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189951656] [2021-11-23 02:31:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:52,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:31:52,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:31:52,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:31:52,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:31:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:54,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 4724 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:31:54,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-23 02:31:54,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:31:54,765 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996606145] [2021-11-23 02:31:54,765 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:31:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189951656] [2021-11-23 02:31:54,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189951656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:54,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:54,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:31:54,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889117693] [2021-11-23 02:31:54,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:54,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:31:54,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:54,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:31:54,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:31:54,767 INFO L87 Difference]: Start difference. First operand 40118 states and 64131 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:32:01,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:03,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:07,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:32:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:16,413 INFO L93 Difference]: Finished difference Result 80235 states and 128259 transitions. [2021-11-23 02:32:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:32:16,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2021-11-23 02:32:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:16,902 INFO L225 Difference]: With dead ends: 80235 [2021-11-23 02:32:16,902 INFO L226 Difference]: Without dead ends: 40136 [2021-11-23 02:32:17,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:32:17,147 INFO L933 BasicCegarLoop]: 5793 mSDtfsCounter, 4498 mSDsluCounter, 9568 mSDsCounter, 0 mSdLazyCounter, 6560 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4505 SdHoareTripleChecker+Valid, 14678 SdHoareTripleChecker+Invalid, 6577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6560 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:17,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4505 Valid, 14678 Invalid, 6577 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6560 Invalid, 2 Unknown, 0 Unchecked, 19.3s Time] [2021-11-23 02:32:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40136 states. [2021-11-23 02:32:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40136 to 40118. [2021-11-23 02:32:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40118 states, 18379 states have (on average 1.2957179389520648) internal successors, (23814), 19280 states have internal predecessors, (23814), 20014 states have call successors, (20014), 1715 states have call predecessors, (20014), 1724 states have return successors, (20291), 19610 states have call predecessors, (20291), 20013 states have call successors, (20291) [2021-11-23 02:32:20,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40118 states to 40118 states and 64119 transitions. [2021-11-23 02:32:20,765 INFO L78 Accepts]: Start accepts. Automaton has 40118 states and 64119 transitions. Word has length 154 [2021-11-23 02:32:20,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:20,766 INFO L470 AbstractCegarLoop]: Abstraction has 40118 states and 64119 transitions. [2021-11-23 02:32:20,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:32:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 40118 states and 64119 transitions. [2021-11-23 02:32:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 02:32:20,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:20,786 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:20,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:21,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:21,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:21,014 INFO L85 PathProgramCache]: Analyzing trace with hash 66759724, now seen corresponding path program 1 times [2021-11-23 02:32:21,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:21,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287877536] [2021-11-23 02:32:21,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:21,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:21,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:32:21,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516523374] [2021-11-23 02:32:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:21,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:21,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:21,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:21,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:32:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:22,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 4718 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:32:22,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-23 02:32:23,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:23,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:23,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287877536] [2021-11-23 02:32:23,397 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:32:23,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516523374] [2021-11-23 02:32:23,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516523374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:23,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:23,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:32:23,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921374648] [2021-11-23 02:32:23,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:23,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:32:23,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:23,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:32:23,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:32:23,400 INFO L87 Difference]: Start difference. First operand 40118 states and 64119 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:32:30,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:35,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:32:43,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:43,257 INFO L93 Difference]: Finished difference Result 100253 states and 160240 transitions. [2021-11-23 02:32:43,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:32:43,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 151 [2021-11-23 02:32:43,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:43,899 INFO L225 Difference]: With dead ends: 100253 [2021-11-23 02:32:43,899 INFO L226 Difference]: Without dead ends: 59978 [2021-11-23 02:32:44,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:32:44,133 INFO L933 BasicCegarLoop]: 6382 mSDtfsCounter, 4484 mSDsluCounter, 12331 mSDsCounter, 0 mSdLazyCounter, 6743 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 17906 SdHoareTripleChecker+Invalid, 6760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6743 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:44,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4493 Valid, 17906 Invalid, 6760 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6743 Invalid, 2 Unknown, 0 Unchecked, 17.0s Time] [2021-11-23 02:32:44,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59978 states. [2021-11-23 02:32:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59978 to 59926. [2021-11-23 02:32:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59926 states, 27419 states have (on average 1.2958532404537) internal successors, (35531), 28770 states have internal predecessors, (35531), 29938 states have call successors, (29938), 2559 states have call predecessors, (29938), 2568 states have return successors, (30333), 29300 states have call predecessors, (30333), 29937 states have call successors, (30333) [2021-11-23 02:32:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59926 states to 59926 states and 95802 transitions. [2021-11-23 02:32:49,347 INFO L78 Accepts]: Start accepts. Automaton has 59926 states and 95802 transitions. Word has length 151 [2021-11-23 02:32:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:49,348 INFO L470 AbstractCegarLoop]: Abstraction has 59926 states and 95802 transitions. [2021-11-23 02:32:49,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-23 02:32:49,348 INFO L276 IsEmpty]: Start isEmpty. Operand 59926 states and 95802 transitions. [2021-11-23 02:32:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-23 02:32:49,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:49,392 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:49,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:49,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:32:49,605 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:49,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1732775606, now seen corresponding path program 1 times [2021-11-23 02:32:49,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:49,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548704474] [2021-11-23 02:32:49,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:49,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:50,022 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:50,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548704474] [2021-11-23 02:32:50,023 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:32:50,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077780511] [2021-11-23 02:32:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:50,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:50,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:50,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:50,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:32:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:51,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 4765 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:32:51,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-23 02:32:52,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:52,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077780511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:52,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:32:52,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:32:52,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202561231] [2021-11-23 02:32:52,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:52,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:32:52,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:52,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:32:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:32:52,133 INFO L87 Difference]: Start difference. First operand 59926 states and 95802 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 02:32:59,294 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 02:33:03,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:33:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:12,565 INFO L93 Difference]: Finished difference Result 119903 states and 191717 transitions. [2021-11-23 02:33:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:33:12,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 167 [2021-11-23 02:33:12,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:13,195 INFO L225 Difference]: With dead ends: 119903 [2021-11-23 02:33:13,195 INFO L226 Difference]: Without dead ends: 59996 [2021-11-23 02:33:13,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:33:13,561 INFO L933 BasicCegarLoop]: 4358 mSDtfsCounter, 4480 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 6314 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 7470 SdHoareTripleChecker+Invalid, 6344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6314 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:13,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4489 Valid, 7470 Invalid, 6344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 6314 Invalid, 2 Unknown, 0 Unchecked, 16.8s Time] [2021-11-23 02:33:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59996 states. [2021-11-23 02:33:18,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59996 to 59996. [2021-11-23 02:33:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59996 states, 27454 states have (on average 1.2954760690609748) internal successors, (35566), 28832 states have internal predecessors, (35566), 29938 states have call successors, (29938), 2567 states have call predecessors, (29938), 2603 states have return successors, (30403), 29300 states have call predecessors, (30403), 29937 states have call successors, (30403) [2021-11-23 02:33:18,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59996 states to 59996 states and 95907 transitions. [2021-11-23 02:33:18,701 INFO L78 Accepts]: Start accepts. Automaton has 59996 states and 95907 transitions. Word has length 167 [2021-11-23 02:33:18,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:18,702 INFO L470 AbstractCegarLoop]: Abstraction has 59996 states and 95907 transitions. [2021-11-23 02:33:18,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 02:33:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 59996 states and 95907 transitions. [2021-11-23 02:33:18,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-23 02:33:18,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:18,743 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:18,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:33:18,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:18,957 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:18,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:18,958 INFO L85 PathProgramCache]: Analyzing trace with hash 231353531, now seen corresponding path program 1 times [2021-11-23 02:33:18,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:18,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505244317] [2021-11-23 02:33:18,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:18,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:19,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:19,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505244317] [2021-11-23 02:33:19,643 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:33:19,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923630819] [2021-11-23 02:33:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:19,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:19,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:19,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:19,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a44aef86-ed38-412c-a198-fc8ab20eb8f1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:33:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:20,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 4763 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:33:20,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-23 02:33:21,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:33:21,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923630819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:21,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:21,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:33:21,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958864292] [2021-11-23 02:33:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:21,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:33:21,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:33:21,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:33:21,495 INFO L87 Difference]: Start difference. First operand 59996 states and 95907 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 02:33:29,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:31,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:34,071 WARN L534 Checker$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 02:33:39,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:33:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:50,464 INFO L93 Difference]: Finished difference Result 179935 states and 287648 transitions. [2021-11-23 02:33:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:33:50,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 166 [2021-11-23 02:33:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:51,578 INFO L225 Difference]: With dead ends: 179935 [2021-11-23 02:33:51,579 INFO L226 Difference]: Without dead ends: 119958 [2021-11-23 02:33:51,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:33:51,917 INFO L933 BasicCegarLoop]: 6455 mSDtfsCounter, 4490 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 6655 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 18116 SdHoareTripleChecker+Invalid, 6685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6655 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:51,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4497 Valid, 18116 Invalid, 6685 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 6655 Invalid, 2 Unknown, 0 Unchecked, 23.0s Time] [2021-11-23 02:33:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119958 states. [2021-11-23 02:34:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119958 to 119856. [2021-11-23 02:34:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119856 states, 54790 states have (on average 1.296094177769666) internal successors, (71013), 57642 states have internal predecessors, (71013), 59862 states have call successors, (59862), 5131 states have call predecessors, (59862), 5203 states have return successors, (60757), 58490 states have call predecessors, (60757), 59861 states have call successors, (60757)