./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:44:39,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:44:39,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:44:39,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:44:39,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:44:39,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:44:39,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:44:39,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:44:39,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:44:39,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:44:39,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:44:39,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:44:39,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:44:39,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:44:39,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:44:39,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:44:39,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:44:39,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:44:39,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:44:39,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:44:39,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:44:39,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:44:39,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:44:39,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:44:39,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:44:39,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:44:39,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:44:39,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:44:39,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:44:39,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:44:39,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:44:39,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:44:39,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:44:39,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:44:39,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:44:39,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:44:39,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:44:39,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:44:39,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:44:39,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:44:39,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:44:39,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:44:39,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:44:39,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:44:39,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:44:39,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:44:39,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:44:39,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:44:39,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:44:39,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:44:39,243 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:44:39,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:44:39,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:44:39,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:44:39,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:44:39,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:44:39,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:44:39,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:44:39,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:44:39,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:44:39,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:44:39,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:44:39,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:44:39,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:44:39,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:44:39,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:44:39,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:44:39,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:44:39,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:44:39,263 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:44:39,263 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:44:39,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:44:39,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:44:39,265 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 [2021-11-13 17:44:39,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:44:39,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:44:39,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:44:39,567 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:44:39,574 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:44:39,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-13 17:44:39,668 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/data/c3ebaf61f/236c107753644648ab796326fa1870cd/FLAG2c4fd7c2f [2021-11-13 17:44:40,766 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:44:40,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-13 17:44:40,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/data/c3ebaf61f/236c107753644648ab796326fa1870cd/FLAG2c4fd7c2f [2021-11-13 17:44:41,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/data/c3ebaf61f/236c107753644648ab796326fa1870cd [2021-11-13 17:44:41,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:44:41,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:44:41,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:44:41,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:44:41,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:44:41,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:44:41" (1/1) ... [2021-11-13 17:44:41,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d086de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:41, skipping insertion in model container [2021-11-13 17:44:41,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:44:41" (1/1) ... [2021-11-13 17:44:41,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:44:41,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:44:45,238 WARN L228 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_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[468644,468657] [2021-11-13 17:44:45,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:44:45,460 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:44:46,081 WARN L228 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_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[468644,468657] [2021-11-13 17:44:46,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:44:46,338 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:44:46,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46 WrapperNode [2021-11-13 17:44:46,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:44:46,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:44:46,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:44:46,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:44:46,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (1/1) ... [2021-11-13 17:44:46,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (1/1) ... [2021-11-13 17:44:46,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:44:46,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:44:46,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:44:46,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:44:46,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (1/1) ... [2021-11-13 17:44:46,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (1/1) ... [2021-11-13 17:44:46,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (1/1) ... [2021-11-13 17:44:46,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (1/1) ... [2021-11-13 17:44:47,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (1/1) ... [2021-11-13 17:44:47,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (1/1) ... [2021-11-13 17:44:47,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (1/1) ... [2021-11-13 17:44:47,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:44:47,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:44:47,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:44:47,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:44:47,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (1/1) ... [2021-11-13 17:44:47,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:44:47,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:44:47,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:44:47,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:44:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2021-11-13 17:44:47,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2021-11-13 17:44:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-13 17:44:47,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-13 17:44:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2021-11-13 17:44:47,470 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2021-11-13 17:44:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2021-11-13 17:44:47,470 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2021-11-13 17:44:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 17:44:47,471 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 17:44:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 17:44:47,471 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 17:44:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-13 17:44:47,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-13 17:44:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:44:47,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:44:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2021-11-13 17:44:47,472 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2021-11-13 17:44:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2021-11-13 17:44:47,472 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2021-11-13 17:44:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2021-11-13 17:44:47,473 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2021-11-13 17:44:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-13 17:44:47,473 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-13 17:44:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2021-11-13 17:44:47,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2021-11-13 17:44:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2021-11-13 17:44:47,473 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2021-11-13 17:44:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 17:44:47,474 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 17:44:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-11-13 17:44:47,474 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-11-13 17:44:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-13 17:44:47,474 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-13 17:44:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 17:44:47,475 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 17:44:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2021-11-13 17:44:47,475 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2021-11-13 17:44:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2021-11-13 17:44:47,475 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2021-11-13 17:44:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2021-11-13 17:44:47,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2021-11-13 17:44:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2021-11-13 17:44:47,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2021-11-13 17:44:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2021-11-13 17:44:47,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2021-11-13 17:44:47,477 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2021-11-13 17:44:47,477 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2021-11-13 17:44:47,477 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 17:44:47,477 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 17:44:47,477 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 17:44:47,477 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 17:44:47,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:44:47,478 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2021-11-13 17:44:47,478 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2021-11-13 17:44:47,478 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2021-11-13 17:44:47,478 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2021-11-13 17:44:47,478 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 17:44:47,479 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 17:44:47,479 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2021-11-13 17:44:47,479 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2021-11-13 17:44:47,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:44:47,479 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2021-11-13 17:44:47,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2021-11-13 17:44:47,480 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 17:44:47,480 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 17:44:47,480 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-13 17:44:47,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-13 17:44:47,480 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2021-11-13 17:44:47,480 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2021-11-13 17:44:47,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:44:47,481 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2021-11-13 17:44:47,481 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2021-11-13 17:44:47,481 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2021-11-13 17:44:47,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2021-11-13 17:44:47,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:44:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_10 [2021-11-13 17:44:47,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_10 [2021-11-13 17:44:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 17:44:47,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 17:44:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2021-11-13 17:44:47,482 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2021-11-13 17:44:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:44:47,483 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:44:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-13 17:44:47,483 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-13 17:44:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 17:44:47,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 17:44:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-13 17:44:47,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-13 17:44:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2021-11-13 17:44:47,484 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2021-11-13 17:44:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2021-11-13 17:44:47,484 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2021-11-13 17:44:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 17:44:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 17:44:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 17:44:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 17:44:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2021-11-13 17:44:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2021-11-13 17:44:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2021-11-13 17:44:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2021-11-13 17:44:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2021-11-13 17:44:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2021-11-13 17:44:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 17:44:47,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 17:44:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-13 17:44:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-13 17:44:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:44:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-13 17:44:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-13 17:44:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-13 17:44:47,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-13 17:44:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2021-11-13 17:44:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2021-11-13 17:44:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 17:44:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 17:44:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:44:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 17:44:47,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 17:44:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_10 [2021-11-13 17:44:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_10 [2021-11-13 17:44:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2021-11-13 17:44:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2021-11-13 17:44:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2021-11-13 17:44:47,489 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2021-11-13 17:44:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2021-11-13 17:44:47,490 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2021-11-13 17:44:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_resume [2021-11-13 17:44:47,490 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_resume [2021-11-13 17:44:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2021-11-13 17:44:47,490 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2021-11-13 17:44:47,491 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2021-11-13 17:44:47,491 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2021-11-13 17:44:47,491 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2021-11-13 17:44:47,491 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2021-11-13 17:44:47,491 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2021-11-13 17:44:47,491 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2021-11-13 17:44:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2021-11-13 17:44:47,492 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2021-11-13 17:44:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-13 17:44:47,492 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-13 17:44:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:44:47,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:44:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-13 17:44:47,493 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-13 17:44:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2021-11-13 17:44:47,493 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2021-11-13 17:44:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:44:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:44:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2021-11-13 17:44:47,493 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2021-11-13 17:44:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:44:47,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:44:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-13 17:44:47,494 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-13 17:44:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-13 17:44:47,494 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-13 17:44:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2021-11-13 17:44:47,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2021-11-13 17:44:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2021-11-13 17:44:47,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2021-11-13 17:44:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_9 [2021-11-13 17:44:47,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_9 [2021-11-13 17:44:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2021-11-13 17:44:47,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2021-11-13 17:44:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2021-11-13 17:44:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2021-11-13 17:44:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2021-11-13 17:44:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2021-11-13 17:44:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2021-11-13 17:44:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2021-11-13 17:44:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2021-11-13 17:44:47,497 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2021-11-13 17:44:47,497 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2021-11-13 17:44:47,497 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2021-11-13 17:44:47,497 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2021-11-13 17:44:47,497 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2021-11-13 17:44:47,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:44:47,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:44:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-13 17:44:47,498 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-13 17:44:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 17:44:47,498 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 17:44:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2021-11-13 17:44:47,498 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2021-11-13 17:44:47,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:44:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:44:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-13 17:44:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-13 17:44:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:44:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:44:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2021-11-13 17:44:47,499 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2021-11-13 17:44:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2021-11-13 17:44:47,500 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2021-11-13 17:44:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:44:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2021-11-13 17:44:47,500 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2021-11-13 17:44:47,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:44:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2021-11-13 17:44:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2021-11-13 17:44:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-13 17:44:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-13 17:44:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:44:47,501 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2021-11-13 17:44:47,501 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2021-11-13 17:44:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-13 17:44:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-13 17:44:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-13 17:44:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-13 17:44:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure _ieee80211_hw_set [2021-11-13 17:44:47,502 INFO L138 BoogieDeclarations]: Found implementation of procedure _ieee80211_hw_set [2021-11-13 17:44:47,502 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2021-11-13 17:44:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2021-11-13 17:44:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2021-11-13 17:44:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2021-11-13 17:44:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2021-11-13 17:44:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2021-11-13 17:44:47,503 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_beacon_work [2021-11-13 17:44:47,503 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_beacon_work [2021-11-13 17:44:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2021-11-13 17:44:47,504 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2021-11-13 17:44:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-13 17:44:47,504 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-13 17:44:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2021-11-13 17:44:47,504 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2021-11-13 17:44:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2021-11-13 17:44:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2021-11-13 17:44:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2021-11-13 17:44:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2021-11-13 17:44:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:44:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2021-11-13 17:44:47,505 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2021-11-13 17:44:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-13 17:44:47,506 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-13 17:44:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:44:47,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:44:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2021-11-13 17:44:47,506 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2021-11-13 17:44:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2021-11-13 17:44:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2021-11-13 17:44:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2021-11-13 17:44:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2021-11-13 17:44:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 17:44:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 17:44:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 17:44:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 17:44:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-13 17:44:47,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-13 17:44:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2021-11-13 17:44:47,508 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2021-11-13 17:44:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-11-13 17:44:47,508 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-11-13 17:44:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2021-11-13 17:44:47,509 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2021-11-13 17:44:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 17:44:47,509 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 17:44:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-13 17:44:47,509 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-13 17:44:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2021-11-13 17:44:47,510 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2021-11-13 17:44:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2021-11-13 17:44:47,510 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2021-11-13 17:44:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:44:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2021-11-13 17:44:47,510 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2021-11-13 17:44:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2021-11-13 17:44:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2021-11-13 17:44:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2021-11-13 17:44:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2021-11-13 17:44:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2021-11-13 17:44:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2021-11-13 17:44:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-13 17:44:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-13 17:44:49,310 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:45:03,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:45:03,248 INFO L299 CfgBuilder]: Removed 78 assume(true) statements. [2021-11-13 17:45:03,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:03 BoogieIcfgContainer [2021-11-13 17:45:03,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:45:03,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:45:03,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:45:03,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:45:03,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:44:41" (1/3) ... [2021-11-13 17:45:03,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e174ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:03, skipping insertion in model container [2021-11-13 17:45:03,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:44:46" (2/3) ... [2021-11-13 17:45:03,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e174ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:45:03, skipping insertion in model container [2021-11-13 17:45:03,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:45:03" (3/3) ... [2021-11-13 17:45:03,268 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-13 17:45:03,273 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:45:03,274 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:45:03,360 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:45:03,371 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=PETRI_NET, 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 [2021-11-13 17:45:03,372 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:45:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 3746 states, 2156 states have (on average 1.312152133580705) internal successors, (2829), 2311 states have internal predecessors, (2829), 1537 states have call successors, (1537), 130 states have call predecessors, (1537), 129 states have return successors, (1522), 1485 states have call predecessors, (1522), 1522 states have call successors, (1522) [2021-11-13 17:45:03,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-13 17:45:03,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:03,540 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:03,540 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:45:03,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1156017786, now seen corresponding path program 1 times [2021-11-13 17:45:03,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:03,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63787840] [2021-11-13 17:45:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:03,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:45:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:45:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:45:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:45:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:45:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 17:45:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 17:45:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 17:45:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-13 17:45:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:04,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:45:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-13 17:45:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-13 17:45:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 17:45:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-13 17:45:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:45:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-13 17:45:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-13 17:45:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-13 17:45:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2021-11-13 17:45:05,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:05,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63787840] [2021-11-13 17:45:05,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63787840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:05,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:05,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:45:05,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100745750] [2021-11-13 17:45:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:05,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:45:05,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:05,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:45:05,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:45:05,538 INFO L87 Difference]: Start difference. First operand has 3746 states, 2156 states have (on average 1.312152133580705) internal successors, (2829), 2311 states have internal predecessors, (2829), 1537 states have call successors, (1537), 130 states have call predecessors, (1537), 129 states have return successors, (1522), 1485 states have call predecessors, (1522), 1522 states have call successors, (1522) Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 17:45:07,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:09,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:11,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:15,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:17,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:19,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:21,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:24,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:28,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:38,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:38,884 INFO L93 Difference]: Finished difference Result 7459 states and 11796 transitions. [2021-11-13 17:45:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:45:38,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 279 [2021-11-13 17:45:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:38,971 INFO L225 Difference]: With dead ends: 7459 [2021-11-13 17:45:38,971 INFO L226 Difference]: Without dead ends: 3690 [2021-11-13 17:45:39,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:45:39,022 INFO L933 BasicCegarLoop]: 4328 mSDtfsCounter, 2210 mSDsluCounter, 4105 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 4642 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30079.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 8433 SdHoareTripleChecker+Invalid, 8425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 125.38ms SdHoareTripleChecker+Time, 4642 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32525.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:39,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2221 Valid, 8433 Invalid, 8425 Unknown, 0 Unchecked, 125.38ms Time], IncrementalHoareTripleChecker [4642 Valid, 3778 Invalid, 5 Unknown, 0 Unchecked, 32525.90ms Time] [2021-11-13 17:45:39,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-11-13 17:45:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3484. [2021-11-13 17:45:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 1911 states have (on average 1.3003663003663004) internal successors, (2485), 1980 states have internal predecessors, (2485), 1444 states have call successors, (1444), 129 states have call predecessors, (1444), 128 states have return successors, (1443), 1406 states have call predecessors, (1443), 1443 states have call successors, (1443) [2021-11-13 17:45:39,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 5372 transitions. [2021-11-13 17:45:39,478 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 5372 transitions. Word has length 279 [2021-11-13 17:45:39,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:39,479 INFO L470 AbstractCegarLoop]: Abstraction has 3484 states and 5372 transitions. [2021-11-13 17:45:39,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 17:45:39,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 5372 transitions. [2021-11-13 17:45:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-13 17:45:39,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:39,487 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:39,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:45:39,488 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:45:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1870882658, now seen corresponding path program 1 times [2021-11-13 17:45:39,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:45:39,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972947126] [2021-11-13 17:45:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:39,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:45:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:39,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:45:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:39,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:45:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:39,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:39,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:45:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:45:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:45:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 17:45:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 17:45:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 17:45:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-13 17:45:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:45:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-13 17:45:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-13 17:45:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:45:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-13 17:45:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-13 17:45:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:45:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-13 17:45:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-13 17:45:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-13 17:45:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:45:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2021-11-13 17:45:40,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:45:40,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972947126] [2021-11-13 17:45:40,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972947126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:40,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:40,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:45:40,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895850240] [2021-11-13 17:45:40,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:40,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:45:40,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:45:40,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:45:40,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:45:40,742 INFO L87 Difference]: Start difference. First operand 3484 states and 5372 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-13 17:45:42,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:44,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:47,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:49,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:51,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:58,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:05,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:09,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:10,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:46:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:26,374 INFO L93 Difference]: Finished difference Result 10162 states and 15752 transitions. [2021-11-13 17:46:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:46:26,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 279 [2021-11-13 17:46:26,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:26,452 INFO L225 Difference]: With dead ends: 10162 [2021-11-13 17:46:26,453 INFO L226 Difference]: Without dead ends: 6718 [2021-11-13 17:46:26,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:46:26,486 INFO L933 BasicCegarLoop]: 5738 mSDtfsCounter, 6026 mSDsluCounter, 8920 mSDsCounter, 0 mSdLazyCounter, 8074 mSolverCounterSat, 9727 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40765.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6413 SdHoareTripleChecker+Valid, 14658 SdHoareTripleChecker+Invalid, 17805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 164.50ms SdHoareTripleChecker+Time, 9727 IncrementalHoareTripleChecker+Valid, 8074 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44545.46ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:26,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6413 Valid, 14658 Invalid, 17805 Unknown, 0 Unchecked, 164.50ms Time], IncrementalHoareTripleChecker [9727 Valid, 8074 Invalid, 4 Unknown, 0 Unchecked, 44545.46ms Time] [2021-11-13 17:46:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6718 states. [2021-11-13 17:46:27,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6718 to 6356. [2021-11-13 17:46:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6356 states, 3434 states have (on average 1.2999417588817705) internal successors, (4464), 3551 states have internal predecessors, (4464), 2676 states have call successors, (2676), 244 states have call predecessors, (2676), 245 states have return successors, (2684), 2622 states have call predecessors, (2684), 2675 states have call successors, (2684) [2021-11-13 17:46:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 9824 transitions. [2021-11-13 17:46:27,258 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 9824 transitions. Word has length 279 [2021-11-13 17:46:27,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:27,259 INFO L470 AbstractCegarLoop]: Abstraction has 6356 states and 9824 transitions. [2021-11-13 17:46:27,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-13 17:46:27,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 9824 transitions. [2021-11-13 17:46:27,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-13 17:46:27,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:27,274 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:27,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:46:27,275 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:46:27,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:27,275 INFO L85 PathProgramCache]: Analyzing trace with hash -724855501, now seen corresponding path program 1 times [2021-11-13 17:46:27,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:27,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761959555] [2021-11-13 17:46:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:27,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:27,463 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:27,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238697903] [2021-11-13 17:46:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:27,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:27,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:27,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:27,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:46:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:29,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 5526 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:46:29,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-13 17:46:30,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:46:30,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:30,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761959555] [2021-11-13 17:46:30,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:30,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238697903] [2021-11-13 17:46:30,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238697903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:30,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:30,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:46:30,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526816974] [2021-11-13 17:46:30,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:30,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:46:30,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:30,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:46:30,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:46:30,430 INFO L87 Difference]: Start difference. First operand 6356 states and 9824 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:46:30,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:30,980 INFO L93 Difference]: Finished difference Result 12696 states and 19624 transitions. [2021-11-13 17:46:30,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:46:30,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 330 [2021-11-13 17:46:30,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:31,063 INFO L225 Difference]: With dead ends: 12696 [2021-11-13 17:46:31,064 INFO L226 Difference]: Without dead ends: 6380 [2021-11-13 17:46:31,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:46:31,125 INFO L933 BasicCegarLoop]: 5375 mSDtfsCounter, 5297 mSDsluCounter, 10729 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5301 SdHoareTripleChecker+Valid, 16104 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.33ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:31,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5301 Valid, 16104 Invalid, 21 Unknown, 0 Unchecked, 42.09ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 39.33ms Time] [2021-11-13 17:46:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6380 states. [2021-11-13 17:46:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6380 to 6374. [2021-11-13 17:46:31,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6374 states, 3450 states have (on average 1.2997101449275363) internal successors, (4484), 3567 states have internal predecessors, (4484), 2676 states have call successors, (2676), 246 states have call predecessors, (2676), 247 states have return successors, (2684), 2622 states have call predecessors, (2684), 2675 states have call successors, (2684) [2021-11-13 17:46:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6374 states to 6374 states and 9844 transitions. [2021-11-13 17:46:31,848 INFO L78 Accepts]: Start accepts. Automaton has 6374 states and 9844 transitions. Word has length 330 [2021-11-13 17:46:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:31,850 INFO L470 AbstractCegarLoop]: Abstraction has 6374 states and 9844 transitions. [2021-11-13 17:46:31,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:46:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 6374 states and 9844 transitions. [2021-11-13 17:46:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-13 17:46:31,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:31,863 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-13 17:46:31,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:32,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-13 17:46:32,079 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:46:32,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash -36668360, now seen corresponding path program 1 times [2021-11-13 17:46:32,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:32,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634604695] [2021-11-13 17:46:32,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:32,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:32,264 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:32,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271587302] [2021-11-13 17:46:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:32,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:32,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:32,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:32,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:46:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:33,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 5538 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:46:33,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-13 17:46:35,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:46:35,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:35,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634604695] [2021-11-13 17:46:35,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:35,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271587302] [2021-11-13 17:46:35,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271587302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:35,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:35,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:46:35,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381270669] [2021-11-13 17:46:35,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:35,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:46:35,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:35,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:46:35,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:46:35,072 INFO L87 Difference]: Start difference. First operand 6374 states and 9844 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:46:35,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:35,926 INFO L93 Difference]: Finished difference Result 19072 states and 29474 transitions. [2021-11-13 17:46:35,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:46:35,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 327 [2021-11-13 17:46:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:36,079 INFO L225 Difference]: With dead ends: 19072 [2021-11-13 17:46:36,079 INFO L226 Difference]: Without dead ends: 12738 [2021-11-13 17:46:36,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:46:36,136 INFO L933 BasicCegarLoop]: 6850 mSDtfsCounter, 5303 mSDsluCounter, 18990 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5307 SdHoareTripleChecker+Valid, 25840 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.67ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.67ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:36,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5307 Valid, 25840 Invalid, 41 Unknown, 0 Unchecked, 57.67ms Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 63.67ms Time] [2021-11-13 17:46:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12738 states. [2021-11-13 17:46:37,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12738 to 12723. [2021-11-13 17:46:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12723 states, 6893 states have (on average 1.3005948063252575) internal successors, (8965), 7127 states have internal predecessors, (8965), 5333 states have call successors, (5333), 493 states have call predecessors, (5333), 496 states have return successors, (5362), 5226 states have call predecessors, (5362), 5332 states have call successors, (5362) [2021-11-13 17:46:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12723 states to 12723 states and 19660 transitions. [2021-11-13 17:46:37,537 INFO L78 Accepts]: Start accepts. Automaton has 12723 states and 19660 transitions. Word has length 327 [2021-11-13 17:46:37,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:37,542 INFO L470 AbstractCegarLoop]: Abstraction has 12723 states and 19660 transitions. [2021-11-13 17:46:37,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:46:37,543 INFO L276 IsEmpty]: Start isEmpty. Operand 12723 states and 19660 transitions. [2021-11-13 17:46:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-13 17:46:37,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:37,556 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-13 17:46:37,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:37,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:37,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:46:37,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash 635654646, now seen corresponding path program 1 times [2021-11-13 17:46:37,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:37,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133796236] [2021-11-13 17:46:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:37,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:37,983 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:37,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252016080] [2021-11-13 17:46:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:37,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:37,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:37,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:37,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:46:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:39,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 5522 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:46:39,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-13 17:46:40,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:46:40,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:40,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133796236] [2021-11-13 17:46:40,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:40,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252016080] [2021-11-13 17:46:40,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252016080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:40,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:40,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:46:40,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893664766] [2021-11-13 17:46:40,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:40,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:46:40,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:40,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:46:40,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:46:40,751 INFO L87 Difference]: Start difference. First operand 12723 states and 19660 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:46:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:42,354 INFO L93 Difference]: Finished difference Result 38173 states and 58972 transitions. [2021-11-13 17:46:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:46:42,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 328 [2021-11-13 17:46:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:42,527 INFO L225 Difference]: With dead ends: 38173 [2021-11-13 17:46:42,528 INFO L226 Difference]: Without dead ends: 25490 [2021-11-13 17:46:42,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:46:42,606 INFO L933 BasicCegarLoop]: 7026 mSDtfsCounter, 5310 mSDsluCounter, 19358 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5314 SdHoareTripleChecker+Valid, 26384 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.22ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:42,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5314 Valid, 26384 Invalid, 27 Unknown, 0 Unchecked, 54.73ms Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 49.22ms Time] [2021-11-13 17:46:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25490 states. [2021-11-13 17:46:45,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25490 to 25383. [2021-11-13 17:46:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25383 states, 13747 states have (on average 1.3014475885647778) internal successors, (17891), 14227 states have internal predecessors, (17891), 10643 states have call successors, (10643), 985 states have call predecessors, (10643), 992 states have return successors, (10702), 10418 states have call predecessors, (10702), 10642 states have call successors, (10702) [2021-11-13 17:46:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25383 states to 25383 states and 39236 transitions. [2021-11-13 17:46:45,511 INFO L78 Accepts]: Start accepts. Automaton has 25383 states and 39236 transitions. Word has length 328 [2021-11-13 17:46:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:45,512 INFO L470 AbstractCegarLoop]: Abstraction has 25383 states and 39236 transitions. [2021-11-13 17:46:45,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:46:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 25383 states and 39236 transitions. [2021-11-13 17:46:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-13 17:46:45,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:45,530 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-13 17:46:45,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:45,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:45,755 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:46:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:45,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1424307076, now seen corresponding path program 1 times [2021-11-13 17:46:45,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:45,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949608344] [2021-11-13 17:46:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:45,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:46,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:46,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33270642] [2021-11-13 17:46:46,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:46,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:46,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:46,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:46,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 17:46:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:47,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 5540 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:46:47,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-13 17:46:48,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:46:48,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:46:48,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949608344] [2021-11-13 17:46:48,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:46:48,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33270642] [2021-11-13 17:46:48,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33270642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:48,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:48,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:46:48,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023158593] [2021-11-13 17:46:48,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:48,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:46:48,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:46:48,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:46:48,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:46:48,930 INFO L87 Difference]: Start difference. First operand 25383 states and 39236 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:46:51,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:51,160 INFO L93 Difference]: Finished difference Result 76213 states and 117856 transitions. [2021-11-13 17:46:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:46:51,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 328 [2021-11-13 17:46:51,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:51,744 INFO L225 Difference]: With dead ends: 76213 [2021-11-13 17:46:51,745 INFO L226 Difference]: Without dead ends: 50870 [2021-11-13 17:46:51,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:46:51,913 INFO L933 BasicCegarLoop]: 6800 mSDtfsCounter, 5302 mSDsluCounter, 18890 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5306 SdHoareTripleChecker+Valid, 25690 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.94ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.51ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:51,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5306 Valid, 25690 Invalid, 41 Unknown, 0 Unchecked, 42.94ms Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 49.51ms Time] [2021-11-13 17:46:51,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50870 states. [2021-11-13 17:46:57,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50870 to 50795. [2021-11-13 17:46:57,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50795 states, 27535 states have (on average 1.3015798075177047) internal successors, (35839), 28495 states have internal predecessors, (35839), 21267 states have call successors, (21267), 1977 states have call predecessors, (21267), 1992 states have return successors, (21450), 20818 states have call predecessors, (21450), 21266 states have call successors, (21450) [2021-11-13 17:46:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50795 states to 50795 states and 78556 transitions. [2021-11-13 17:46:57,671 INFO L78 Accepts]: Start accepts. Automaton has 50795 states and 78556 transitions. Word has length 328 [2021-11-13 17:46:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:57,672 INFO L470 AbstractCegarLoop]: Abstraction has 50795 states and 78556 transitions. [2021-11-13 17:46:57,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:46:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 50795 states and 78556 transitions. [2021-11-13 17:46:57,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-13 17:46:57,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:57,691 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-13 17:46:57,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:57,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-13 17:46:57,919 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:46:57,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1883363039, now seen corresponding path program 1 times [2021-11-13 17:46:57,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:46:57,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68252371] [2021-11-13 17:46:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:57,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:46:58,120 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:46:58,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971589679] [2021-11-13 17:46:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:58,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:46:58,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:58,121 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:46:58,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 17:46:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:59,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 5536 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:46:59,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-13 17:47:01,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:47:01,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:01,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68252371] [2021-11-13 17:47:01,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:47:01,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971589679] [2021-11-13 17:47:01,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971589679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:01,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:01,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:47:01,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844115373] [2021-11-13 17:47:01,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:01,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:47:01,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:01,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:47:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:47:01,164 INFO L87 Difference]: Start difference. First operand 50795 states and 78556 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:47:05,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:05,841 INFO L93 Difference]: Finished difference Result 152641 states and 236160 transitions. [2021-11-13 17:47:05,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:47:05,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 326 [2021-11-13 17:47:05,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:06,827 INFO L225 Difference]: With dead ends: 152641 [2021-11-13 17:47:06,827 INFO L226 Difference]: Without dead ends: 101886 [2021-11-13 17:47:07,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:47:07,279 INFO L933 BasicCegarLoop]: 6850 mSDtfsCounter, 5304 mSDsluCounter, 18990 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 25840 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.35ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.62ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:07,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 25840 Invalid, 41 Unknown, 0 Unchecked, 46.35ms Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 52.62ms Time] [2021-11-13 17:47:07,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101886 states. [2021-11-13 17:47:15,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101886 to 101691. [2021-11-13 17:47:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101691 states, 55175 states have (on average 1.3015858631626642) internal successors, (71815), 57095 states have internal predecessors, (71815), 42515 states have call successors, (42515), 3969 states have call predecessors, (42515), 4000 states have return successors, (43058), 41618 states have call predecessors, (43058), 42514 states have call successors, (43058) [2021-11-13 17:47:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101691 states to 101691 states and 157388 transitions. [2021-11-13 17:47:17,396 INFO L78 Accepts]: Start accepts. Automaton has 101691 states and 157388 transitions. Word has length 326 [2021-11-13 17:47:17,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:17,397 INFO L470 AbstractCegarLoop]: Abstraction has 101691 states and 157388 transitions. [2021-11-13 17:47:17,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:47:17,397 INFO L276 IsEmpty]: Start isEmpty. Operand 101691 states and 157388 transitions. [2021-11-13 17:47:17,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-13 17:47:17,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:17,410 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-13 17:47:17,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:17,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:47:17,623 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:47:17,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash -278816971, now seen corresponding path program 1 times [2021-11-13 17:47:17,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:17,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932755774] [2021-11-13 17:47:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:17,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:17,797 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 17:47:17,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542204574] [2021-11-13 17:47:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:17,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:47:17,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:17,799 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:47:17,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a1bb25-c6ff-4ee5-a61d-536612f6c54d/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 17:47:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:19,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 5534 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:19,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-13 17:47:20,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:47:20,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:20,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932755774] [2021-11-13 17:47:20,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 17:47:20,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542204574] [2021-11-13 17:47:20,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542204574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:20,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:20,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:47:20,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316037840] [2021-11-13 17:47:20,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:20,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:47:20,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:47:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:47:20,296 INFO L87 Difference]: Start difference. First operand 101691 states and 157388 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)