./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/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_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF --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-53f42b1 [2021-11-20 07:31:36,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:31:36,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:31:36,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:31:36,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:31:36,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:31:36,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:31:36,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:31:36,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:31:36,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:31:36,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:31:36,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:31:36,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:31:36,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:31:36,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:31:36,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:31:36,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:31:36,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:31:36,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:31:36,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:31:36,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:31:36,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:31:36,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:31:36,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:31:36,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:31:36,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:31:36,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:31:36,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:31:36,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:31:36,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:31:36,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:31:36,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:31:36,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:31:36,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:31:36,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:31:36,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:31:36,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:31:36,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:31:36,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:31:36,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:31:36,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:31:36,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 07:31:36,700 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:31:36,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:31:36,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:31:36,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:31:36,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:31:36,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:31:36,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:31:36,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:31:36,712 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:31:36,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:31:36,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:31:36,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:31:36,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:31:36,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:31:36,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:31:36,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:31:36,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:31:36,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:31:36,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:31:36,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:31:36,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:31:36,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:31:36,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:31:36,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:31:36,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:31:36,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:31:36,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:31:36,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:31:36,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:31:36,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:31:36,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:31:36,720 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_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73e11d79da89f19153d89e853a8d4a3607f25d95ae579da9c148a59839e48ce3 [2021-11-20 07:31:36,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:31:37,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:31:37,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:31:37,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:31:37,009 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:31:37,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/../../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 [2021-11-20 07:31:37,078 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/data/6f851cc61/27f1774f7cee4f57b5ec922609e65091/FLAG3fee36bb4 [2021-11-20 07:31:38,265 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:31:38,266 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/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 [2021-11-20 07:31:38,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/data/6f851cc61/27f1774f7cee4f57b5ec922609e65091/FLAG3fee36bb4 [2021-11-20 07:31:38,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/data/6f851cc61/27f1774f7cee4f57b5ec922609e65091 [2021-11-20 07:31:38,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:31:38,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:31:38,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:31:38,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:31:38,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:31:38,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:31:38" (1/1) ... [2021-11-20 07:31:38,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb81585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:38, skipping insertion in model container [2021-11-20 07:31:38,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:31:38" (1/1) ... [2021-11-20 07:31:38,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:31:38,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:31:42,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/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] [2021-11-20 07:31:42,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:31:42,630 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:31:43,130 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/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] [2021-11-20 07:31:43,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:31:43,386 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:31:43,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43 WrapperNode [2021-11-20 07:31:43,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:31:43,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:31:43,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:31:43,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:31:43,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (1/1) ... [2021-11-20 07:31:43,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (1/1) ... [2021-11-20 07:31:43,850 INFO L137 Inliner]: procedures = 440, calls = 4514, calls flagged for inlining = 181, calls inlined = 178, statements flattened = 8251 [2021-11-20 07:31:43,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:31:43,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:31:43,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:31:43,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:31:43,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (1/1) ... [2021-11-20 07:31:43,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (1/1) ... [2021-11-20 07:31:43,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (1/1) ... [2021-11-20 07:31:43,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (1/1) ... [2021-11-20 07:31:44,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (1/1) ... [2021-11-20 07:31:44,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (1/1) ... [2021-11-20 07:31:44,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (1/1) ... [2021-11-20 07:31:44,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:31:44,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:31:44,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:31:44,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:31:44,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (1/1) ... [2021-11-20 07:31:44,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:31:44,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:31:44,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:31:44,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:31:44,448 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2021-11-20 07:31:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2021-11-20 07:31:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-20 07:31:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-20 07:31:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2021-11-20 07:31:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2021-11-20 07:31:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2021-11-20 07:31:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2021-11-20 07:31:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 07:31:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 07:31:44,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 07:31:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 07:31:44,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-20 07:31:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-20 07:31:44,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 07:31:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 07:31:44,450 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2021-11-20 07:31:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2021-11-20 07:31:44,451 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2021-11-20 07:31:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2021-11-20 07:31:44,451 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_writereg [2021-11-20 07:31:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_writereg [2021-11-20 07:31:44,451 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-20 07:31:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-20 07:31:44,451 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_generic_frame_duration [2021-11-20 07:31:44,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_generic_frame_duration [2021-11-20 07:31:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2021-11-20 07:31:44,452 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2021-11-20 07:31:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 07:31:44,452 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 07:31:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-11-20 07:31:44,452 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-11-20 07:31:44,452 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 07:31:44,453 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 07:31:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 07:31:44,453 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 07:31:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2021-11-20 07:31:44,453 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2021-11-20 07:31:44,453 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2021-11-20 07:31:44,454 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2021-11-20 07:31:44,454 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2021-11-20 07:31:44,454 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2021-11-20 07:31:44,454 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2021-11-20 07:31:44,454 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2021-11-20 07:31:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2021-11-20 07:31:44,455 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2021-11-20 07:31:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2021-11-20 07:31:44,455 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2021-11-20 07:31:44,455 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 07:31:44,455 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 07:31:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-20 07:31:44,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-20 07:31:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:31:44,456 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2021-11-20 07:31:44,456 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2021-11-20 07:31:44,457 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2021-11-20 07:31:44,457 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2021-11-20 07:31:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 07:31:44,458 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 07:31:44,458 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2021-11-20 07:31:44,458 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2021-11-20 07:31:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 07:31:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2021-11-20 07:31:44,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2021-11-20 07:31:44,459 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 07:31:44,460 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 07:31:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 07:31:44,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 07:31:44,460 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2021-11-20 07:31:44,460 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2021-11-20 07:31:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 07:31:44,461 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2021-11-20 07:31:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2021-11-20 07:31:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2021-11-20 07:31:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2021-11-20 07:31:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:31:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_10 [2021-11-20 07:31:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_10 [2021-11-20 07:31:44,462 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 07:31:44,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 07:31:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2021-11-20 07:31:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2021-11-20 07:31:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 07:31:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 07:31:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-20 07:31:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-20 07:31:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-20 07:31:44,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-20 07:31:44,463 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-20 07:31:44,464 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-20 07:31:44,464 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2021-11-20 07:31:44,465 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2021-11-20 07:31:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2021-11-20 07:31:44,465 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2021-11-20 07:31:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-20 07:31:44,465 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-20 07:31:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 07:31:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 07:31:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2021-11-20 07:31:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2021-11-20 07:31:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2021-11-20 07:31:44,467 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2021-11-20 07:31:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2021-11-20 07:31:44,467 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2021-11-20 07:31:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-20 07:31:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-20 07:31:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-20 07:31:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-20 07:31:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:31:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:31:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-20 07:31:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-20 07:31:44,469 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-20 07:31:44,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-20 07:31:44,469 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2021-11-20 07:31:44,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2021-11-20 07:31:44,469 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 07:31:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 07:31:44,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:31:44,473 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 07:31:44,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 07:31:44,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_10 [2021-11-20 07:31:44,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_10 [2021-11-20 07:31:44,474 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2021-11-20 07:31:44,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2021-11-20 07:31:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_init [2021-11-20 07:31:44,476 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_init [2021-11-20 07:31:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2021-11-20 07:31:44,481 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2021-11-20 07:31:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_resume [2021-11-20 07:31:44,482 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_resume [2021-11-20 07:31:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam2 [2021-11-20 07:31:44,482 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam2 [2021-11-20 07:31:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2021-11-20 07:31:44,482 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2021-11-20 07:31:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2021-11-20 07:31:44,482 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2021-11-20 07:31:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2021-11-20 07:31:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2021-11-20 07:31:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_basic_rates [2021-11-20 07:31:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_basic_rates [2021-11-20 07:31:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-20 07:31:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-20 07:31:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:31:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:31:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 07:31:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 07:31:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2021-11-20 07:31:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2021-11-20 07:31:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 07:31:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 07:31:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_conf_tx [2021-11-20 07:31:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_conf_tx [2021-11-20 07:31:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 07:31:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 07:31:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-20 07:31:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-20 07:31:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-20 07:31:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-20 07:31:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2021-11-20 07:31:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2021-11-20 07:31:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_4 [2021-11-20 07:31:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_4 [2021-11-20 07:31:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_9 [2021-11-20 07:31:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_9 [2021-11-20 07:31:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2021-11-20 07:31:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2021-11-20 07:31:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2021-11-20 07:31:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2021-11-20 07:31:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_7 [2021-11-20 07:31:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_7 [2021-11-20 07:31:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2021-11-20 07:31:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2021-11-20 07:31:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2021-11-20 07:31:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2021-11-20 07:31:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2021-11-20 07:31:44,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2021-11-20 07:31:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_set_channel [2021-11-20 07:31:44,487 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_set_channel [2021-11-20 07:31:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 07:31:44,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 07:31:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-20 07:31:44,487 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-20 07:31:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-20 07:31:44,488 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-20 07:31:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2021-11-20 07:31:44,488 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2021-11-20 07:31:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 07:31:44,488 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 07:31:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-20 07:31:44,488 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-20 07:31:44,488 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:31:44,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:31:44,490 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_int_disable [2021-11-20 07:31:44,490 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_int_disable [2021-11-20 07:31:44,490 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2021-11-20 07:31:44,490 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2021-11-20 07:31:44,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:31:44,490 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2021-11-20 07:31:44,490 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2021-11-20 07:31:44,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:31:44,491 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225se_rf_stop [2021-11-20 07:31:44,491 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225se_rf_stop [2021-11-20 07:31:44,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-20 07:31:44,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-20 07:31:44,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:31:44,491 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_init [2021-11-20 07:31:44,491 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_init [2021-11-20 07:31:44,491 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-20 07:31:44,491 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-20 07:31:44,492 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-20 07:31:44,492 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-20 07:31:44,492 INFO L130 BoogieDeclarations]: Found specification of procedure _ieee80211_hw_set [2021-11-20 07:31:44,492 INFO L138 BoogieDeclarations]: Found implementation of procedure _ieee80211_hw_set [2021-11-20 07:31:44,492 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2021-11-20 07:31:44,492 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2021-11-20 07:31:44,492 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2021-11-20 07:31:44,492 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2021-11-20 07:31:44,492 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_rf_readreg [2021-11-20 07:31:44,492 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_rf_readreg [2021-11-20 07:31:44,493 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_beacon_work [2021-11-20 07:31:44,493 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_beacon_work [2021-11-20 07:31:44,493 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2021-11-20 07:31:44,493 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2021-11-20 07:31:44,493 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-20 07:31:44,493 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-20 07:31:44,493 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2021-11-20 07:31:44,493 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2021-11-20 07:31:44,493 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_rx [2021-11-20 07:31:44,493 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_rx [2021-11-20 07:31:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2021-11-20 07:31:44,494 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2021-11-20 07:31:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:31:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2021-11-20 07:31:44,494 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2021-11-20 07:31:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-20 07:31:44,494 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-20 07:31:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 07:31:44,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 07:31:44,494 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2021-11-20 07:31:44,495 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2021-11-20 07:31:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2021-11-20 07:31:44,495 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2021-11-20 07:31:44,495 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_conf_ac_parm [2021-11-20 07:31:44,495 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_conf_ac_parm [2021-11-20 07:31:44,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-20 07:31:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-20 07:31:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-20 07:31:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-20 07:31:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-20 07:31:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-20 07:31:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_stop [2021-11-20 07:31:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_stop [2021-11-20 07:31:44,500 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-11-20 07:31:44,500 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-11-20 07:31:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2021-11-20 07:31:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2021-11-20 07:31:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-20 07:31:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-20 07:31:44,502 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 07:31:44,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 07:31:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2021-11-20 07:31:44,503 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2021-11-20 07:31:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2021-11-20 07:31:44,503 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2021-11-20 07:31:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:31:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2021-11-20 07:31:44,503 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2021-11-20 07:31:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8187se_three_wire_io [2021-11-20 07:31:44,503 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8187se_three_wire_io [2021-11-20 07:31:44,503 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2021-11-20 07:31:44,504 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2021-11-20 07:31:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2021-11-20 07:31:44,504 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2021-11-20 07:31:44,504 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-20 07:31:44,504 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-20 07:31:45,587 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:31:45,591 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:31:46,048 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 07:31:54,719 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:31:54,762 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:31:54,763 INFO L301 CfgBuilder]: Removed 78 assume(true) statements. [2021-11-20 07:31:54,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:31:54 BoogieIcfgContainer [2021-11-20 07:31:54,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:31:54,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:31:54,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:31:54,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:31:54,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:31:38" (1/3) ... [2021-11-20 07:31:54,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d693665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:31:54, skipping insertion in model container [2021-11-20 07:31:54,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:31:43" (2/3) ... [2021-11-20 07:31:54,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d693665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:31:54, skipping insertion in model container [2021-11-20 07:31:54,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:31:54" (3/3) ... [2021-11-20 07:31:54,777 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 [2021-11-20 07:31:54,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:31:54,785 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:31:54,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:31:54,878 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 [2021-11-20 07:31:54,879 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:31:54,991 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) [2021-11-20 07:31:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-20 07:31:55,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:31:55,011 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] [2021-11-20 07:31:55,012 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:31:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:31:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1156017786, now seen corresponding path program 1 times [2021-11-20 07:31:55,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:31:55,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387568535] [2021-11-20 07:31:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:31:55,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:31:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:55,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:31:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:31:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:31:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:31:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:31:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:31:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 07:31:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:31:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-20 07:31:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 07:31:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-20 07:31:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-20 07:31:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:31:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-20 07:31:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-20 07:31:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-20 07:31:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-20 07:31:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:57,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-20 07:31:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:57,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:57,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-20 07:31:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:57,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:31:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:31:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2021-11-20 07:31:57,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:31:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387568535] [2021-11-20 07:31:57,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387568535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:31:57,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:31:57,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:31:57,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096406405] [2021-11-20 07:31:57,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:31:57,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:31:57,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:31:57,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:31:57,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:31:57,215 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) [2021-11-20 07:32:02,416 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 [] [2021-11-20 07:32:04,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:32:06,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:32:08,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:32:09,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:32:19,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:32:19,253 INFO L93 Difference]: Finished difference Result 7459 states and 11796 transitions. [2021-11-20 07:32:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:32:19,256 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 [2021-11-20 07:32:19,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:32:19,343 INFO L225 Difference]: With dead ends: 7459 [2021-11-20 07:32:19,344 INFO L226 Difference]: Without dead ends: 3690 [2021-11-20 07:32:19,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:32:19,389 INFO L933 BasicCegarLoop]: 4325 mSDtfsCounter, 2210 mSDsluCounter, 4096 mSDsCounter, 0 mSdLazyCounter, 3782 mSolverCounterSat, 4642 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2221 SdHoareTripleChecker+Valid, 8421 SdHoareTripleChecker+Invalid, 8426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4642 IncrementalHoareTripleChecker+Valid, 3782 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:32:19,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2221 Valid, 8421 Invalid, 8426 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4642 Valid, 3782 Invalid, 2 Unknown, 0 Unchecked, 21.2s Time] [2021-11-20 07:32:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-11-20 07:32:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3484. [2021-11-20 07:32:19,866 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) [2021-11-20 07:32:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 5372 transitions. [2021-11-20 07:32:19,914 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 5372 transitions. Word has length 279 [2021-11-20 07:32:19,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:32:19,914 INFO L470 AbstractCegarLoop]: Abstraction has 3484 states and 5372 transitions. [2021-11-20 07:32:19,915 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) [2021-11-20 07:32:19,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 5372 transitions. [2021-11-20 07:32:19,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-20 07:32:19,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:32:19,928 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] [2021-11-20 07:32:19,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:32:19,928 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:32:19,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:32:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1870882658, now seen corresponding path program 1 times [2021-11-20 07:32:19,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:32:19,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264969167] [2021-11-20 07:32:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:32:19,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:32:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:32:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:32:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 07:32:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:32:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:32:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:32:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 07:32:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:32:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-20 07:32:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-20 07:32:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-20 07:32:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-20 07:32:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 07:32:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-20 07:32:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-20 07:32:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-20 07:32:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:21,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-11-20 07:32:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:21,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:21,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-20 07:32:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-20 07:32:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:32:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2021-11-20 07:32:21,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:32:21,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264969167] [2021-11-20 07:32:21,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264969167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:32:21,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:32:21,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:32:21,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144210884] [2021-11-20 07:32:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:32:21,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:32:21,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:32:21,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:32:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:32:21,116 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) [2021-11-20 07:32:24,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:32:30,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:32:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:32:49,377 INFO L93 Difference]: Finished difference Result 10162 states and 15752 transitions. [2021-11-20 07:32:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:32:49,378 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 [2021-11-20 07:32:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:32:49,445 INFO L225 Difference]: With dead ends: 10162 [2021-11-20 07:32:49,445 INFO L226 Difference]: Without dead ends: 6718 [2021-11-20 07:32:49,473 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 [2021-11-20 07:32:49,474 INFO L933 BasicCegarLoop]: 5741 mSDtfsCounter, 6026 mSDsluCounter, 8926 mSDsCounter, 0 mSdLazyCounter, 8079 mSolverCounterSat, 9727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6407 SdHoareTripleChecker+Valid, 14667 SdHoareTripleChecker+Invalid, 17806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9727 IncrementalHoareTripleChecker+Valid, 8079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:32:49,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6407 Valid, 14667 Invalid, 17806 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9727 Valid, 8079 Invalid, 0 Unknown, 0 Unchecked, 27.3s Time] [2021-11-20 07:32:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6718 states. [2021-11-20 07:32:50,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6718 to 6356. [2021-11-20 07:32:50,076 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) [2021-11-20 07:32:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 9824 transitions. [2021-11-20 07:32:50,130 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 9824 transitions. Word has length 279 [2021-11-20 07:32:50,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:32:50,131 INFO L470 AbstractCegarLoop]: Abstraction has 6356 states and 9824 transitions. [2021-11-20 07:32:50,132 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) [2021-11-20 07:32:50,132 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 9824 transitions. [2021-11-20 07:32:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-20 07:32:50,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:32:50,145 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] [2021-11-20 07:32:50,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:32:50,145 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:32:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:32:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash -724855501, now seen corresponding path program 1 times [2021-11-20 07:32:50,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:32:50,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489742301] [2021-11-20 07:32:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:32:50,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:32:50,308 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:32:50,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1808022230] [2021-11-20 07:32:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:32:50,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:32:50,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:32:50,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:32:50,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:32:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:51,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 5488 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:32:51,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:32:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-20 07:32:52,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:32:52,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:32:52,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489742301] [2021-11-20 07:32:52,648 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:32:52,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808022230] [2021-11-20 07:32:52,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808022230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:32:52,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:32:52,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:32:52,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52553116] [2021-11-20 07:32:52,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:32:52,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:32:52,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:32:52,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:32:52,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:32:52,652 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) [2021-11-20 07:32:53,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:32:53,203 INFO L93 Difference]: Finished difference Result 12696 states and 19624 transitions. [2021-11-20 07:32:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:32:53,203 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 [2021-11-20 07:32:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:32:53,267 INFO L225 Difference]: With dead ends: 12696 [2021-11-20 07:32:53,267 INFO L226 Difference]: Without dead ends: 6380 [2021-11-20 07:32:53,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:32:53,322 INFO L933 BasicCegarLoop]: 5375 mSDtfsCounter, 5297 mSDsluCounter, 10729 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5301 SdHoareTripleChecker+Valid, 16104 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:32:53,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5301 Valid, 16104 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:32:53,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6380 states. [2021-11-20 07:32:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6380 to 6374. [2021-11-20 07:32:53,957 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) [2021-11-20 07:32:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6374 states to 6374 states and 9844 transitions. [2021-11-20 07:32:54,005 INFO L78 Accepts]: Start accepts. Automaton has 6374 states and 9844 transitions. Word has length 330 [2021-11-20 07:32:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:32:54,007 INFO L470 AbstractCegarLoop]: Abstraction has 6374 states and 9844 transitions. [2021-11-20 07:32:54,007 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) [2021-11-20 07:32:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6374 states and 9844 transitions. [2021-11-20 07:32:54,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-20 07:32:54,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:32:54,019 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] [2021-11-20 07:32:54,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:32:54,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:32:54,244 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:32:54,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:32:54,245 INFO L85 PathProgramCache]: Analyzing trace with hash -36668360, now seen corresponding path program 1 times [2021-11-20 07:32:54,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:32:54,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520475043] [2021-11-20 07:32:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:32:54,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:32:54,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:32:54,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551835129] [2021-11-20 07:32:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:32:54,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:32:54,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:32:54,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:32:54,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:32:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:55,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 5500 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:32:55,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:32:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-20 07:32:56,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:32:56,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:32:56,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520475043] [2021-11-20 07:32:56,604 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:32:56,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551835129] [2021-11-20 07:32:56,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551835129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:32:56,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:32:56,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:32:56,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726121906] [2021-11-20 07:32:56,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:32:56,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:32:56,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:32:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:32:56,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:32:56,607 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) [2021-11-20 07:32:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:32:57,441 INFO L93 Difference]: Finished difference Result 19072 states and 29474 transitions. [2021-11-20 07:32:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:32:57,442 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 [2021-11-20 07:32:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:32:57,582 INFO L225 Difference]: With dead ends: 19072 [2021-11-20 07:32:57,583 INFO L226 Difference]: Without dead ends: 12738 [2021-11-20 07:32:57,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:32:57,633 INFO L933 BasicCegarLoop]: 6850 mSDtfsCounter, 5303 mSDsluCounter, 18990 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5307 SdHoareTripleChecker+Valid, 25840 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:32:57,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5307 Valid, 25840 Invalid, 41 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:32:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12738 states. [2021-11-20 07:32:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12738 to 12723. [2021-11-20 07:32:59,044 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) [2021-11-20 07:32:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12723 states to 12723 states and 19660 transitions. [2021-11-20 07:32:59,172 INFO L78 Accepts]: Start accepts. Automaton has 12723 states and 19660 transitions. Word has length 327 [2021-11-20 07:32:59,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:32:59,176 INFO L470 AbstractCegarLoop]: Abstraction has 12723 states and 19660 transitions. [2021-11-20 07:32:59,177 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) [2021-11-20 07:32:59,177 INFO L276 IsEmpty]: Start isEmpty. Operand 12723 states and 19660 transitions. [2021-11-20 07:32:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-20 07:32:59,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:32:59,188 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] [2021-11-20 07:32:59,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:32:59,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-20 07:32:59,410 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:32:59,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:32:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash 635654646, now seen corresponding path program 1 times [2021-11-20 07:32:59,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:32:59,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717152482] [2021-11-20 07:32:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:32:59,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:32:59,550 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:32:59,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707272990] [2021-11-20 07:32:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:32:59,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:32:59,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:32:59,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:32:59,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:33:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:00,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 5484 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:33:00,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:33:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-20 07:33:01,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:33:01,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:01,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717152482] [2021-11-20 07:33:01,804 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:33:01,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707272990] [2021-11-20 07:33:01,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707272990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:01,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:01,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:33:01,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539794576] [2021-11-20 07:33:01,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:01,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:33:01,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:01,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:33:01,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:33:01,807 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) [2021-11-20 07:33:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:03,239 INFO L93 Difference]: Finished difference Result 38173 states and 58972 transitions. [2021-11-20 07:33:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:33:03,243 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 [2021-11-20 07:33:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:03,417 INFO L225 Difference]: With dead ends: 38173 [2021-11-20 07:33:03,417 INFO L226 Difference]: Without dead ends: 25490 [2021-11-20 07:33:03,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:33:03,496 INFO L933 BasicCegarLoop]: 7026 mSDtfsCounter, 5310 mSDsluCounter, 19358 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5314 SdHoareTripleChecker+Valid, 26384 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:03,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5314 Valid, 26384 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:33:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25490 states. [2021-11-20 07:33:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25490 to 25383. [2021-11-20 07:33:06,442 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) [2021-11-20 07:33:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25383 states to 25383 states and 39236 transitions. [2021-11-20 07:33:06,642 INFO L78 Accepts]: Start accepts. Automaton has 25383 states and 39236 transitions. Word has length 328 [2021-11-20 07:33:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:06,643 INFO L470 AbstractCegarLoop]: Abstraction has 25383 states and 39236 transitions. [2021-11-20 07:33:06,644 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) [2021-11-20 07:33:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 25383 states and 39236 transitions. [2021-11-20 07:33:06,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-20 07:33:06,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:06,659 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] [2021-11-20 07:33:06,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:33:06,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:33:06,878 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:06,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:06,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1424307076, now seen corresponding path program 1 times [2021-11-20 07:33:06,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:06,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008278460] [2021-11-20 07:33:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:06,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:07,017 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:33:07,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008031432] [2021-11-20 07:33:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:07,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:33:07,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:33:07,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:33:07,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:33:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:08,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 5502 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:33:08,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:33:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-20 07:33:09,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:33:09,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:09,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008278460] [2021-11-20 07:33:09,443 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:33:09,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008031432] [2021-11-20 07:33:09,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008031432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:09,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:09,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:33:09,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924666226] [2021-11-20 07:33:09,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:09,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:33:09,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:09,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:33:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:33:09,449 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) [2021-11-20 07:33:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:11,601 INFO L93 Difference]: Finished difference Result 76213 states and 117856 transitions. [2021-11-20 07:33:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:33:11,602 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 [2021-11-20 07:33:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:12,041 INFO L225 Difference]: With dead ends: 76213 [2021-11-20 07:33:12,041 INFO L226 Difference]: Without dead ends: 50870 [2021-11-20 07:33:12,359 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 [2021-11-20 07:33:12,360 INFO L933 BasicCegarLoop]: 6800 mSDtfsCounter, 5302 mSDsluCounter, 18890 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5306 SdHoareTripleChecker+Valid, 25690 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:12,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5306 Valid, 25690 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:33:12,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50870 states. [2021-11-20 07:33:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50870 to 50795. [2021-11-20 07:33:17,979 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) [2021-11-20 07:33:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50795 states to 50795 states and 78556 transitions. [2021-11-20 07:33:18,510 INFO L78 Accepts]: Start accepts. Automaton has 50795 states and 78556 transitions. Word has length 328 [2021-11-20 07:33:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:18,512 INFO L470 AbstractCegarLoop]: Abstraction has 50795 states and 78556 transitions. [2021-11-20 07:33:18,512 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) [2021-11-20 07:33:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 50795 states and 78556 transitions. [2021-11-20 07:33:18,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-20 07:33:18,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:18,530 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] [2021-11-20 07:33:18,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:33:18,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:33:18,756 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1883363039, now seen corresponding path program 1 times [2021-11-20 07:33:18,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:18,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968534117] [2021-11-20 07:33:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:18,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:19,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:33:19,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036397939] [2021-11-20 07:33:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:19,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:33:19,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:33:19,291 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:33:19,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:33:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:20,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 5498 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:33:20,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:33:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-20 07:33:21,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:33:21,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:21,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968534117] [2021-11-20 07:33:21,723 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:33:21,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036397939] [2021-11-20 07:33:21,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036397939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:21,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:21,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:33:21,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492350279] [2021-11-20 07:33:21,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:21,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:33:21,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:33:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:33:21,726 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) [2021-11-20 07:33:26,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:26,537 INFO L93 Difference]: Finished difference Result 152641 states and 236160 transitions. [2021-11-20 07:33:26,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:33:26,538 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 [2021-11-20 07:33:26,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:27,619 INFO L225 Difference]: With dead ends: 152641 [2021-11-20 07:33:27,619 INFO L226 Difference]: Without dead ends: 101886 [2021-11-20 07:33:28,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:33:28,004 INFO L933 BasicCegarLoop]: 6850 mSDtfsCounter, 5304 mSDsluCounter, 18990 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 25840 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:28,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 25840 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:33:28,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101886 states. [2021-11-20 07:33:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101886 to 101691. [2021-11-20 07:33:36,921 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) [2021-11-20 07:33:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101691 states to 101691 states and 157388 transitions. [2021-11-20 07:33:38,425 INFO L78 Accepts]: Start accepts. Automaton has 101691 states and 157388 transitions. Word has length 326 [2021-11-20 07:33:38,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:38,427 INFO L470 AbstractCegarLoop]: Abstraction has 101691 states and 157388 transitions. [2021-11-20 07:33:38,427 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) [2021-11-20 07:33:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand 101691 states and 157388 transitions. [2021-11-20 07:33:38,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-20 07:33:38,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:38,444 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] [2021-11-20 07:33:38,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-20 07:33:38,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:33:38,663 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:38,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:38,664 INFO L85 PathProgramCache]: Analyzing trace with hash -278816971, now seen corresponding path program 1 times [2021-11-20 07:33:38,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:38,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325899345] [2021-11-20 07:33:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:38,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:38,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 07:33:38,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821146837] [2021-11-20 07:33:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:38,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:33:38,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:33:38,839 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:33:38,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcc88b68-91da-42e7-8318-201740ee73d7/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:33:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:40,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 5496 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:33:40,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:33:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2021-11-20 07:33:41,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:33:41,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:41,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325899345] [2021-11-20 07:33:41,470 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 07:33:41,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821146837] [2021-11-20 07:33:41,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821146837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:41,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:41,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:33:41,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870219622] [2021-11-20 07:33:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:41,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:33:41,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:41,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:33:41,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:33:41,474 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) [2021-11-20 07:33:50,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:50,779 INFO L93 Difference]: Finished difference Result 305593 states and 473248 transitions. [2021-11-20 07:33:50,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:33:50,779 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 325 [2021-11-20 07:33:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:52,821 INFO L225 Difference]: With dead ends: 305593 [2021-11-20 07:33:52,821 INFO L226 Difference]: Without dead ends: 203942 [2021-11-20 07:33:53,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:33:53,471 INFO L933 BasicCegarLoop]: 6980 mSDtfsCounter, 5314 mSDsluCounter, 19262 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5318 SdHoareTripleChecker+Valid, 26242 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:53,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5318 Valid, 26242 Invalid, 46 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:33:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203942 states.