./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 73b3ed2538f968a3e44c5d7fd04ec7d3b91dc8bba4b6c9eed0228eaab08d1208 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:41:59,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:41:59,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:41:59,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:41:59,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:41:59,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:41:59,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:41:59,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:41:59,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:41:59,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:41:59,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:41:59,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:41:59,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:41:59,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:41:59,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:41:59,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:41:59,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:41:59,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:41:59,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:41:59,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:41:59,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:41:59,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:41:59,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:41:59,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:41:59,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:41:59,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:41:59,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:41:59,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:41:59,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:41:59,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:41:59,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:41:59,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:41:59,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:41:59,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:41:59,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:41:59,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:41:59,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:41:59,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:41:59,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:41:59,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:41:59,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:41:59,815 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:41:59,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:41:59,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:41:59,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:41:59,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:41:59,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:41:59,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:41:59,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:41:59,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:41:59,876 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:41:59,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:41:59,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:41:59,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:41:59,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:41:59,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:41:59,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:41:59,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:41:59,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:41:59,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:41:59,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:41:59,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:41:59,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:41:59,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:41:59,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:41:59,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:41:59,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:41:59,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:41:59,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:41:59,883 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:41:59,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:41:59,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:41:59,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:41:59,885 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_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73b3ed2538f968a3e44c5d7fd04ec7d3b91dc8bba4b6c9eed0228eaab08d1208 [2021-11-13 17:42:00,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:42:00,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:42:00,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:42:00,262 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:42:00,263 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:42:00,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i [2021-11-13 17:42:00,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/data/7d1f20e5c/e07c8fc26b8f46c48831ce0efb6fe7ee/FLAG4fa50cc41 [2021-11-13 17:42:01,313 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:42:01,314 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i [2021-11-13 17:42:01,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/data/7d1f20e5c/e07c8fc26b8f46c48831ce0efb6fe7ee/FLAG4fa50cc41 [2021-11-13 17:42:01,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/data/7d1f20e5c/e07c8fc26b8f46c48831ce0efb6fe7ee [2021-11-13 17:42:01,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:42:01,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:42:01,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:42:01,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:42:01,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:42:01,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:42:01" (1/1) ... [2021-11-13 17:42:01,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36fe13a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:01, skipping insertion in model container [2021-11-13 17:42:01,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:42:01" (1/1) ... [2021-11-13 17:42:01,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:42:01,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:42:02,791 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i[153414,153427] [2021-11-13 17:42:03,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:42:03,038 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:42:03,271 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i[153414,153427] [2021-11-13 17:42:03,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:42:03,396 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:42:03,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03 WrapperNode [2021-11-13 17:42:03,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:42:03,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:42:03,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:42:03,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:42:03,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (1/1) ... [2021-11-13 17:42:03,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (1/1) ... [2021-11-13 17:42:03,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:42:03,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:42:03,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:42:03,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:42:03,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (1/1) ... [2021-11-13 17:42:03,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (1/1) ... [2021-11-13 17:42:03,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (1/1) ... [2021-11-13 17:42:03,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (1/1) ... [2021-11-13 17:42:03,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (1/1) ... [2021-11-13 17:42:03,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (1/1) ... [2021-11-13 17:42:03,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (1/1) ... [2021-11-13 17:42:03,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:42:03,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:42:03,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:42:03,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:42:03,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (1/1) ... [2021-11-13 17:42:03,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:42:03,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:42:03,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:42:03,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:42:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:42:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:42:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:42:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:42:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:42:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:42:03,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:42:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:42:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 17:42:03,821 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 17:42:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:42:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-13 17:42:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-13 17:42:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:42:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:42:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:42:03,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:42:03,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:42:03,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:42:03,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 17:42:03,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 17:42:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2021-11-13 17:42:03,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2021-11-13 17:42:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:42:03,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:42:03,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:42:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 17:42:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 17:42:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:42:03,825 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:42:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:42:03,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:42:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2021-11-13 17:42:03,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2021-11-13 17:42:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:42:03,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:42:03,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:42:04,246 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:42:04,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:42:04,859 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-13 17:42:04,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:42:04 BoogieIcfgContainer [2021-11-13 17:42:04,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:42:04,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:42:04,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:42:04,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:42:04,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:42:01" (1/3) ... [2021-11-13 17:42:04,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4a2fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:42:04, skipping insertion in model container [2021-11-13 17:42:04,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:03" (2/3) ... [2021-11-13 17:42:04,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4a2fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:42:04, skipping insertion in model container [2021-11-13 17:42:04,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:42:04" (3/3) ... [2021-11-13 17:42:04,877 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i [2021-11-13 17:42:04,884 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:42:04,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:42:04,945 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:42:04,953 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:42:04,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:42:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 146 states have (on average 1.4246575342465753) internal successors, (208), 151 states have internal predecessors, (208), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 17:42:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 17:42:04,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:04,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:04,992 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:04,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash 995609139, now seen corresponding path program 1 times [2021-11-13 17:42:05,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:42:05,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397730543] [2021-11-13 17:42:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:05,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:42:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:05,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:42:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:05,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:05,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:42:05,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:42:05,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397730543] [2021-11-13 17:42:05,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397730543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:05,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:05,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:42:05,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900992479] [2021-11-13 17:42:05,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:05,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:42:05,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:42:05,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:42:05,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:42:05,611 INFO L87 Difference]: Start difference. First operand has 183 states, 146 states have (on average 1.4246575342465753) internal successors, (208), 151 states have internal predecessors, (208), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:06,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:06,037 INFO L93 Difference]: Finished difference Result 373 states and 538 transitions. [2021-11-13 17:42:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:42:06,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2021-11-13 17:42:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:06,055 INFO L225 Difference]: With dead ends: 373 [2021-11-13 17:42:06,055 INFO L226 Difference]: Without dead ends: 185 [2021-11-13 17:42:06,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:42:06,081 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 64 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 248.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.07ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 336.14ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:06,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 383 Invalid, 110 Unknown, 0 Unchecked, 10.07ms Time], IncrementalHoareTripleChecker [50 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 336.14ms Time] [2021-11-13 17:42:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-13 17:42:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 173. [2021-11-13 17:42:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 141 states have (on average 1.3546099290780143) internal successors, (191), 141 states have internal predecessors, (191), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 17:42:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 234 transitions. [2021-11-13 17:42:06,192 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 234 transitions. Word has length 35 [2021-11-13 17:42:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:06,193 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 234 transitions. [2021-11-13 17:42:06,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 234 transitions. [2021-11-13 17:42:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 17:42:06,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:06,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:06,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:42:06,201 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash 861595633, now seen corresponding path program 1 times [2021-11-13 17:42:06,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:42:06,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412769207] [2021-11-13 17:42:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:06,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:42:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:42:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:06,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:42:06,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:42:06,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412769207] [2021-11-13 17:42:06,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412769207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:06,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:06,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:42:06,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724906260] [2021-11-13 17:42:06,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:06,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:42:06,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:42:06,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:42:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:42:06,366 INFO L87 Difference]: Start difference. First operand 173 states and 234 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:07,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:07,044 INFO L93 Difference]: Finished difference Result 510 states and 698 transitions. [2021-11-13 17:42:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:42:07,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2021-11-13 17:42:07,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:07,050 INFO L225 Difference]: With dead ends: 510 [2021-11-13 17:42:07,050 INFO L226 Difference]: Without dead ends: 345 [2021-11-13 17:42:07,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:42:07,053 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 251 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 453.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.37ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 551.87ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:07,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 700 Invalid, 268 Unknown, 0 Unchecked, 19.37ms Time], IncrementalHoareTripleChecker [55 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 551.87ms Time] [2021-11-13 17:42:07,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-13 17:42:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 321. [2021-11-13 17:42:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 262 states have (on average 1.3587786259541985) internal successors, (356), 262 states have internal predecessors, (356), 40 states have call successors, (40), 19 states have call predecessors, (40), 18 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-13 17:42:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 435 transitions. [2021-11-13 17:42:07,092 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 435 transitions. Word has length 35 [2021-11-13 17:42:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:07,092 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 435 transitions. [2021-11-13 17:42:07,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:07,093 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 435 transitions. [2021-11-13 17:42:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-13 17:42:07,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:07,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:07,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:42:07,096 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash 32458826, now seen corresponding path program 1 times [2021-11-13 17:42:07,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:42:07,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377008131] [2021-11-13 17:42:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:07,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:42:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:42:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:42:07,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:42:07,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377008131] [2021-11-13 17:42:07,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377008131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:07,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:07,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:42:07,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137839410] [2021-11-13 17:42:07,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:07,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:42:07,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:42:07,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:42:07,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:42:07,268 INFO L87 Difference]: Start difference. First operand 321 states and 435 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:07,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:07,809 INFO L93 Difference]: Finished difference Result 657 states and 894 transitions. [2021-11-13 17:42:07,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:42:07,810 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-11-13 17:42:07,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:07,816 INFO L225 Difference]: With dead ends: 657 [2021-11-13 17:42:07,818 INFO L226 Difference]: Without dead ends: 344 [2021-11-13 17:42:07,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:42:07,822 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 406 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 375.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.93ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 445.61ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:07,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 747 Invalid, 265 Unknown, 0 Unchecked, 12.93ms Time], IncrementalHoareTripleChecker [99 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 445.61ms Time] [2021-11-13 17:42:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-13 17:42:07,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 320. [2021-11-13 17:42:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 261 states have (on average 1.3486590038314177) internal successors, (352), 261 states have internal predecessors, (352), 40 states have call successors, (40), 19 states have call predecessors, (40), 18 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-13 17:42:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 431 transitions. [2021-11-13 17:42:07,882 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 431 transitions. Word has length 39 [2021-11-13 17:42:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:07,883 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 431 transitions. [2021-11-13 17:42:07,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:07,886 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 431 transitions. [2021-11-13 17:42:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-13 17:42:07,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:07,899 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:07,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:42:07,900 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:07,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1820755710, now seen corresponding path program 1 times [2021-11-13 17:42:07,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:42:07,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888950040] [2021-11-13 17:42:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:07,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:42:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:08,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:42:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:08,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:08,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-13 17:42:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 17:42:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:08,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:08,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-13 17:42:08,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:42:08,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888950040] [2021-11-13 17:42:08,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888950040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:08,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:08,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:42:08,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937962322] [2021-11-13 17:42:08,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:08,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:42:08,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:42:08,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:42:08,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:42:08,206 INFO L87 Difference]: Start difference. First operand 320 states and 431 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:42:08,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:08,915 INFO L93 Difference]: Finished difference Result 985 states and 1347 transitions. [2021-11-13 17:42:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:42:08,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2021-11-13 17:42:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:08,927 INFO L225 Difference]: With dead ends: 985 [2021-11-13 17:42:08,928 INFO L226 Difference]: Without dead ends: 668 [2021-11-13 17:42:08,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:42:08,932 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 250 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 504.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.68ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 599.21ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:08,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 1151 Invalid, 371 Unknown, 0 Unchecked, 12.68ms Time], IncrementalHoareTripleChecker [60 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 599.21ms Time] [2021-11-13 17:42:08,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-11-13 17:42:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 616. [2021-11-13 17:42:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 501 states have (on average 1.3512974051896207) internal successors, (677), 501 states have internal predecessors, (677), 78 states have call successors, (78), 37 states have call predecessors, (78), 36 states have return successors, (81), 77 states have call predecessors, (81), 77 states have call successors, (81) [2021-11-13 17:42:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 836 transitions. [2021-11-13 17:42:09,002 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 836 transitions. Word has length 80 [2021-11-13 17:42:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:09,004 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 836 transitions. [2021-11-13 17:42:09,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:42:09,005 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 836 transitions. [2021-11-13 17:42:09,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-13 17:42:09,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:09,012 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:09,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:42:09,013 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:09,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:09,014 INFO L85 PathProgramCache]: Analyzing trace with hash 943577961, now seen corresponding path program 1 times [2021-11-13 17:42:09,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:42:09,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973611232] [2021-11-13 17:42:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:09,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:42:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:42:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-13 17:42:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 17:42:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:42:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-13 17:42:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-13 17:42:09,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:42:09,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973611232] [2021-11-13 17:42:09,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973611232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:09,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:09,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 17:42:09,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504631367] [2021-11-13 17:42:09,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:09,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 17:42:09,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:42:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 17:42:09,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:42:09,400 INFO L87 Difference]: Start difference. First operand 616 states and 836 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 17:42:10,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:10,222 INFO L93 Difference]: Finished difference Result 1382 states and 1911 transitions. [2021-11-13 17:42:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:42:10,223 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 127 [2021-11-13 17:42:10,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:10,233 INFO L225 Difference]: With dead ends: 1382 [2021-11-13 17:42:10,234 INFO L226 Difference]: Without dead ends: 774 [2021-11-13 17:42:10,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:42:10,237 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 197 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 582.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.96ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 690.96ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:10,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 2705 Invalid, 593 Unknown, 0 Unchecked, 17.96ms Time], IncrementalHoareTripleChecker [45 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 690.96ms Time] [2021-11-13 17:42:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-13 17:42:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 620. [2021-11-13 17:42:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 503 states have (on average 1.333996023856859) internal successors, (671), 505 states have internal predecessors, (671), 78 states have call successors, (78), 37 states have call predecessors, (78), 38 states have return successors, (83), 77 states have call predecessors, (83), 77 states have call successors, (83) [2021-11-13 17:42:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 832 transitions. [2021-11-13 17:42:10,283 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 832 transitions. Word has length 127 [2021-11-13 17:42:10,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:10,284 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 832 transitions. [2021-11-13 17:42:10,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 17:42:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 832 transitions. [2021-11-13 17:42:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-13 17:42:10,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:10,287 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:10,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:42:10,288 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:10,288 INFO L85 PathProgramCache]: Analyzing trace with hash 872950130, now seen corresponding path program 1 times [2021-11-13 17:42:10,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:42:10,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409196985] [2021-11-13 17:42:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:10,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:42:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:42:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-13 17:42:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 17:42:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:42:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-13 17:42:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:42:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:42:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 17:42:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-13 17:42:10,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:42:10,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409196985] [2021-11-13 17:42:10,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409196985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:10,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:10,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:42:10,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145678520] [2021-11-13 17:42:10,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:10,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:42:10,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:42:10,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:42:10,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:42:10,603 INFO L87 Difference]: Start difference. First operand 620 states and 832 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:42:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:11,017 INFO L93 Difference]: Finished difference Result 1270 states and 1717 transitions. [2021-11-13 17:42:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:42:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2021-11-13 17:42:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:11,023 INFO L225 Difference]: With dead ends: 1270 [2021-11-13 17:42:11,023 INFO L226 Difference]: Without dead ends: 657 [2021-11-13 17:42:11,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:42:11,026 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 73 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 304.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.50ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 356.34ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:11,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 804 Invalid, 253 Unknown, 0 Unchecked, 6.50ms Time], IncrementalHoareTripleChecker [53 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 356.34ms Time] [2021-11-13 17:42:11,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-13 17:42:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 621. [2021-11-13 17:42:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 504 states have (on average 1.3333333333333333) internal successors, (672), 506 states have internal predecessors, (672), 78 states have call successors, (78), 37 states have call predecessors, (78), 38 states have return successors, (83), 77 states have call predecessors, (83), 77 states have call successors, (83) [2021-11-13 17:42:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 833 transitions. [2021-11-13 17:42:11,069 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 833 transitions. Word has length 133 [2021-11-13 17:42:11,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:11,069 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 833 transitions. [2021-11-13 17:42:11,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:42:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 833 transitions. [2021-11-13 17:42:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 17:42:11,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:11,073 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:11,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:42:11,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:11,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:11,074 INFO L85 PathProgramCache]: Analyzing trace with hash 123812154, now seen corresponding path program 1 times [2021-11-13 17:42:11,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:42:11,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958960514] [2021-11-13 17:42:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:11,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:42:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:42:11,195 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:42:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:42:11,483 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:42:11,484 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:42:11,485 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 17:42:11,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:42:11,490 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:11,493 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:42:11,522 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,523 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,524 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,524 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,524 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,525 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,525 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,525 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,526 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,526 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,526 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,527 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,527 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,527 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,527 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,528 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,528 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,528 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,529 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,529 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,529 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,529 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,529 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,530 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,530 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,530 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,530 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,531 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,531 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,531 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,531 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,532 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,532 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,532 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,532 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,533 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,533 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,533 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,533 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,534 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,534 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,534 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,534 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,535 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,535 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,535 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,535 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,536 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,536 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,536 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,536 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,537 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,537 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,537 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,540 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,540 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,540 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,540 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,541 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,541 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,541 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,542 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,544 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,544 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,545 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,545 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,545 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,545 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,546 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,546 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,546 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,547 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,547 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,547 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,547 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,548 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,548 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,548 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,548 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,549 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,549 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,549 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,549 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,550 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,550 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,550 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,550 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,551 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,551 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,551 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,552 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,552 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,552 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,552 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,552 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,553 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,553 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,553 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,554 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,554 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,554 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,554 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,555 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,555 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,555 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,555 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,556 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,556 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,556 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,557 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,557 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,557 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,558 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,558 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,558 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,558 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,559 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,559 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,559 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,559 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,560 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,560 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,563 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,564 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,564 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,564 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,564 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,565 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,565 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,565 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,566 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,566 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,566 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,566 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,567 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,567 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,568 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,568 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,568 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,568 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,569 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,569 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,569 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,570 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,570 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,570 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,571 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,571 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,571 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,571 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,572 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,572 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,572 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,572 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,573 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,573 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,573 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,573 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,574 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,574 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,574 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,575 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,575 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,575 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,575 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,576 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,576 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,576 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,577 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,577 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,577 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,577 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,578 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,578 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,578 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,579 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,579 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,579 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,579 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,580 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,580 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,580 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,581 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,581 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,581 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,581 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,582 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,582 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,582 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,582 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,583 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,583 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,583 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,583 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,584 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,584 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,584 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,585 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,585 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,585 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,586 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,586 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,586 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,587 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,587 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,587 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,587 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,588 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 17:42:11,588 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,588 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 17:42:11,595 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:42:11,602 INFO L158 Benchmark]: Toolchain (without parser) took 9762.83ms. Allocated memory was 94.4MB in the beginning and 232.8MB in the end (delta: 138.4MB). Free memory was 53.1MB in the beginning and 140.7MB in the end (delta: -87.7MB). Peak memory consumption was 122.0MB. Max. memory is 16.1GB. [2021-11-13 17:42:11,603 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 66.6MB in the beginning and 66.6MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:42:11,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1555.42ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 52.9MB in the beginning and 60.4MB in the end (delta: -7.6MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2021-11-13 17:42:11,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.62ms. Allocated memory is still 125.8MB. Free memory was 60.4MB in the beginning and 56.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 17:42:11,604 INFO L158 Benchmark]: Boogie Preprocessor took 199.63ms. Allocated memory is still 125.8MB. Free memory was 56.3MB in the beginning and 81.2MB in the end (delta: -24.9MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2021-11-13 17:42:11,605 INFO L158 Benchmark]: RCFGBuilder took 1138.85ms. Allocated memory is still 125.8MB. Free memory was 81.2MB in the beginning and 66.8MB in the end (delta: 14.4MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2021-11-13 17:42:11,605 INFO L158 Benchmark]: TraceAbstraction took 6737.43ms. Allocated memory was 125.8MB in the beginning and 232.8MB in the end (delta: 107.0MB). Free memory was 66.5MB in the beginning and 140.7MB in the end (delta: -74.3MB). Peak memory consumption was 104.2MB. Max. memory is 16.1GB. [2021-11-13 17:42:11,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 66.6MB in the beginning and 66.6MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1555.42ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 52.9MB in the beginning and 60.4MB in the end (delta: -7.6MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 121.62ms. Allocated memory is still 125.8MB. Free memory was 60.4MB in the beginning and 56.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 199.63ms. Allocated memory is still 125.8MB. Free memory was 56.3MB in the beginning and 81.2MB in the end (delta: -24.9MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1138.85ms. Allocated memory is still 125.8MB. Free memory was 81.2MB in the beginning and 66.8MB in the end (delta: 14.4MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6737.43ms. Allocated memory was 125.8MB in the beginning and 232.8MB in the end (delta: 107.0MB). Free memory was 66.5MB in the beginning and 140.7MB in the end (delta: -74.3MB). Peak memory consumption was 104.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:42:11,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 73b3ed2538f968a3e44c5d7fd04ec7d3b91dc8bba4b6c9eed0228eaab08d1208 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:42:14,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:42:14,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:42:14,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:42:14,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:42:14,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:42:14,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:42:14,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:42:14,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:42:14,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:42:14,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:42:14,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:42:14,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:42:14,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:42:14,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:42:14,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:42:14,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:42:14,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:42:14,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:42:14,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:42:14,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:42:14,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:42:14,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:42:14,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:42:14,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:42:14,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:42:14,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:42:14,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:42:14,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:42:14,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:42:14,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:42:14,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:42:14,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:42:14,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:42:14,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:42:14,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:42:14,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:42:14,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:42:14,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:42:14,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:42:14,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:42:14,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-13 17:42:14,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:42:14,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:42:14,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:42:14,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:42:14,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:42:14,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:42:14,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:42:14,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:42:14,604 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:42:14,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:42:14,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:42:14,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:42:14,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:42:14,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:42:14,606 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:42:14,606 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:42:14,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:42:14,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:42:14,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:42:14,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:42:14,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:42:14,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:42:14,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:42:14,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:42:14,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:42:14,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:42:14,609 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:42:14,609 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:42:14,609 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:42:14,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:42:14,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:42:14,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:42:14,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:42:14,611 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73b3ed2538f968a3e44c5d7fd04ec7d3b91dc8bba4b6c9eed0228eaab08d1208 [2021-11-13 17:42:15,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:42:15,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:42:15,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:42:15,074 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:42:15,076 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:42:15,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i [2021-11-13 17:42:15,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/data/6ba191437/5fca6aea39cb42be9163e11b12447d20/FLAGaddca353d [2021-11-13 17:42:16,159 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:42:16,160 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i [2021-11-13 17:42:16,216 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/data/6ba191437/5fca6aea39cb42be9163e11b12447d20/FLAGaddca353d [2021-11-13 17:42:16,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/data/6ba191437/5fca6aea39cb42be9163e11b12447d20 [2021-11-13 17:42:16,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:42:16,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:42:16,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:42:16,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:42:16,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:42:16,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:42:16" (1/1) ... [2021-11-13 17:42:16,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781cadba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:16, skipping insertion in model container [2021-11-13 17:42:16,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:42:16" (1/1) ... [2021-11-13 17:42:16,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:42:16,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:42:17,680 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i[153414,153427] [2021-11-13 17:42:17,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:42:17,974 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:42:18,167 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i[153414,153427] [2021-11-13 17:42:18,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:42:18,310 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:42:18,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18 WrapperNode [2021-11-13 17:42:18,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:42:18,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:42:18,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:42:18,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:42:18,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (1/1) ... [2021-11-13 17:42:18,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (1/1) ... [2021-11-13 17:42:18,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:42:18,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:42:18,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:42:18,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:42:18,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (1/1) ... [2021-11-13 17:42:18,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (1/1) ... [2021-11-13 17:42:18,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (1/1) ... [2021-11-13 17:42:18,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (1/1) ... [2021-11-13 17:42:18,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (1/1) ... [2021-11-13 17:42:18,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (1/1) ... [2021-11-13 17:42:18,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (1/1) ... [2021-11-13 17:42:18,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:42:18,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:42:18,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:42:18,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:42:18,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (1/1) ... [2021-11-13 17:42:18,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:42:18,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:42:18,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:42:18,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:42:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:42:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:42:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:42:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 17:42:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 17:42:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 17:42:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:42:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 17:42:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:42:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:42:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:42:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:42:18,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 17:42:18,718 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 17:42:18,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:42:18,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-13 17:42:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-13 17:42:18,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:42:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:42:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:42:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:42:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 17:42:18,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:42:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 17:42:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:42:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:42:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:42:18,721 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~C_INT~X~$Pointer$~X~C_INT~TO~VOID [2021-11-13 17:42:18,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~C_INT~X~$Pointer$~X~C_INT~TO~VOID [2021-11-13 17:42:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 17:42:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 17:42:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:42:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 17:42:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2021-11-13 17:42:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2021-11-13 17:42:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:42:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:42:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 17:42:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 17:42:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 17:42:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 17:42:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 17:42:18,725 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 17:42:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:42:18,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:42:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 17:42:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:42:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:42:18,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:42:19,237 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:42:20,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:42:20,632 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-13 17:42:20,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:42:20 BoogieIcfgContainer [2021-11-13 17:42:20,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:42:20,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:42:20,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:42:20,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:42:20,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:42:16" (1/3) ... [2021-11-13 17:42:20,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8fad49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:42:20, skipping insertion in model container [2021-11-13 17:42:20,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:42:18" (2/3) ... [2021-11-13 17:42:20,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8fad49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:42:20, skipping insertion in model container [2021-11-13 17:42:20,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:42:20" (3/3) ... [2021-11-13 17:42:20,651 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1051.ko-entry_point.cil.out.i [2021-11-13 17:42:20,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:42:20,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:42:20,735 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:42:20,746 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:42:20,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:42:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 146 states have (on average 1.4246575342465753) internal successors, (208), 151 states have internal predecessors, (208), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 17:42:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 17:42:20,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:20,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:20,791 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:20,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:20,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2020398219, now seen corresponding path program 1 times [2021-11-13 17:42:20,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:20,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872260055] [2021-11-13 17:42:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:20,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:20,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:20,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:20,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:42:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:21,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:42:21,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:42:21,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:42:21,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:21,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872260055] [2021-11-13 17:42:21,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872260055] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:21,607 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:21,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:42:21,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249285185] [2021-11-13 17:42:21,610 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:21,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:42:21,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:42:21,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:42:21,677 INFO L87 Difference]: Start difference. First operand has 183 states, 146 states have (on average 1.4246575342465753) internal successors, (208), 151 states have internal predecessors, (208), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:21,811 INFO L93 Difference]: Finished difference Result 362 states and 520 transitions. [2021-11-13 17:42:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:42:21,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2021-11-13 17:42:21,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:21,838 INFO L225 Difference]: With dead ends: 362 [2021-11-13 17:42:21,838 INFO L226 Difference]: Without dead ends: 174 [2021-11-13 17:42:21,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:42:21,846 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.47ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:21,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 728 Invalid, 5 Unknown, 0 Unchecked, 14.30ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 25.47ms Time] [2021-11-13 17:42:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-13 17:42:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-11-13 17:42:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 142 states have (on average 1.352112676056338) internal successors, (192), 142 states have internal predecessors, (192), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-13 17:42:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 235 transitions. [2021-11-13 17:42:21,906 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 235 transitions. Word has length 35 [2021-11-13 17:42:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:21,908 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 235 transitions. [2021-11-13 17:42:21,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 235 transitions. [2021-11-13 17:42:21,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 17:42:21,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:21,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:21,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:22,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:22,133 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:22,133 INFO L85 PathProgramCache]: Analyzing trace with hash 21026425, now seen corresponding path program 1 times [2021-11-13 17:42:22,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:22,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970917330] [2021-11-13 17:42:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:22,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:22,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:22,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:22,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:42:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:22,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:42:22,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:42:22,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:42:22,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:22,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970917330] [2021-11-13 17:42:22,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970917330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:22,603 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:22,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:42:22,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700517628] [2021-11-13 17:42:22,603 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:22,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:42:22,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:22,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:42:22,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:42:22,606 INFO L87 Difference]: Start difference. First operand 174 states and 235 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:23,072 INFO L93 Difference]: Finished difference Result 634 states and 865 transitions. [2021-11-13 17:42:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:42:23,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-11-13 17:42:23,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:23,079 INFO L225 Difference]: With dead ends: 634 [2021-11-13 17:42:23,080 INFO L226 Difference]: Without dead ends: 469 [2021-11-13 17:42:23,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:42:23,083 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 407 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 342.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.47ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 383.06ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:23,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 847 Invalid, 70 Unknown, 0 Unchecked, 7.47ms Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 383.06ms Time] [2021-11-13 17:42:23,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-11-13 17:42:23,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2021-11-13 17:42:23,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 383 states have (on average 1.3629242819843341) internal successors, (522), 383 states have internal predecessors, (522), 58 states have call successors, (58), 28 states have call predecessors, (58), 27 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-13 17:42:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 637 transitions. [2021-11-13 17:42:23,141 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 637 transitions. Word has length 36 [2021-11-13 17:42:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:23,141 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 637 transitions. [2021-11-13 17:42:23,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:23,142 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 637 transitions. [2021-11-13 17:42:23,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-13 17:42:23,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:23,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:23,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:23,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:23,359 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:23,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1989051346, now seen corresponding path program 1 times [2021-11-13 17:42:23,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:23,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043631957] [2021-11-13 17:42:23,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:23,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:23,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:23,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:23,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:42:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:23,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:42:23,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:42:23,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:42:23,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:23,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043631957] [2021-11-13 17:42:23,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043631957] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:23,859 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:23,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:42:23,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628131693] [2021-11-13 17:42:23,859 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:23,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:42:23,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:42:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:42:23,862 INFO L87 Difference]: Start difference. First operand 469 states and 637 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:24,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:24,079 INFO L93 Difference]: Finished difference Result 928 states and 1261 transitions. [2021-11-13 17:42:24,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:42:24,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-11-13 17:42:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:24,085 INFO L225 Difference]: With dead ends: 928 [2021-11-13 17:42:24,085 INFO L226 Difference]: Without dead ends: 468 [2021-11-13 17:42:24,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:42:24,093 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 363 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.74ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142.85ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:24,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 579 Invalid, 43 Unknown, 0 Unchecked, 6.74ms Time], IncrementalHoareTripleChecker [22 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 142.85ms Time] [2021-11-13 17:42:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-13 17:42:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2021-11-13 17:42:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 382 states have (on average 1.356020942408377) internal successors, (518), 382 states have internal predecessors, (518), 58 states have call successors, (58), 28 states have call predecessors, (58), 27 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-11-13 17:42:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 633 transitions. [2021-11-13 17:42:24,155 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 633 transitions. Word has length 40 [2021-11-13 17:42:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:24,156 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 633 transitions. [2021-11-13 17:42:24,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:42:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 633 transitions. [2021-11-13 17:42:24,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-13 17:42:24,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:24,162 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:24,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:24,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:24,377 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:24,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1384341438, now seen corresponding path program 1 times [2021-11-13 17:42:24,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:24,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883799815] [2021-11-13 17:42:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:24,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:24,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:24,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:24,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:42:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:24,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:42:24,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 17:42:25,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-13 17:42:25,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:25,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883799815] [2021-11-13 17:42:25,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883799815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:25,307 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:25,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 17:42:25,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125521618] [2021-11-13 17:42:25,308 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:25,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:42:25,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:25,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:42:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:42:25,310 INFO L87 Difference]: Start difference. First operand 468 states and 633 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:42:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:25,530 INFO L93 Difference]: Finished difference Result 1383 states and 1884 transitions. [2021-11-13 17:42:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:42:25,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 81 [2021-11-13 17:42:25,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:25,541 INFO L225 Difference]: With dead ends: 1383 [2021-11-13 17:42:25,541 INFO L226 Difference]: Without dead ends: 919 [2021-11-13 17:42:25,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:42:25,544 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 184 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.67ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.93ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:25,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 1193 Invalid, 53 Unknown, 0 Unchecked, 6.67ms Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 112.93ms Time] [2021-11-13 17:42:25,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-11-13 17:42:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 907. [2021-11-13 17:42:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 738 states have (on average 1.3577235772357723) internal successors, (1002), 738 states have internal predecessors, (1002), 114 states have call successors, (114), 55 states have call predecessors, (114), 54 states have return successors, (119), 113 states have call predecessors, (119), 113 states have call successors, (119) [2021-11-13 17:42:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1235 transitions. [2021-11-13 17:42:25,618 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1235 transitions. Word has length 81 [2021-11-13 17:42:25,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:25,619 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1235 transitions. [2021-11-13 17:42:25,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:42:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1235 transitions. [2021-11-13 17:42:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-13 17:42:25,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:25,632 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:25,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:25,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:25,847 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:25,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:25,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1203544401, now seen corresponding path program 1 times [2021-11-13 17:42:25,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:25,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116652763] [2021-11-13 17:42:25,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:25,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:25,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:25,851 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:25,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:42:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:26,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 17:42:26,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 17:42:26,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 17:42:27,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:27,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116652763] [2021-11-13 17:42:27,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116652763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:27,156 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:27,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-11-13 17:42:27,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661760830] [2021-11-13 17:42:27,157 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:27,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:42:27,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:27,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:42:27,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:42:27,159 INFO L87 Difference]: Start difference. First operand 907 states and 1235 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 17:42:27,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:27,509 INFO L93 Difference]: Finished difference Result 1977 states and 2728 transitions. [2021-11-13 17:42:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:42:27,510 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 128 [2021-11-13 17:42:27,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:27,519 INFO L225 Difference]: With dead ends: 1977 [2021-11-13 17:42:27,519 INFO L226 Difference]: Without dead ends: 1079 [2021-11-13 17:42:27,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:42:27,523 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 136 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.67ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 194.17ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:27,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 2702 Invalid, 75 Unknown, 0 Unchecked, 10.67ms Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 194.17ms Time] [2021-11-13 17:42:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-11-13 17:42:27,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 907. [2021-11-13 17:42:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 738 states have (on average 1.3414634146341464) internal successors, (990), 738 states have internal predecessors, (990), 114 states have call successors, (114), 55 states have call predecessors, (114), 54 states have return successors, (119), 113 states have call predecessors, (119), 113 states have call successors, (119) [2021-11-13 17:42:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1223 transitions. [2021-11-13 17:42:27,612 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1223 transitions. Word has length 128 [2021-11-13 17:42:27,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:27,614 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1223 transitions. [2021-11-13 17:42:27,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 17:42:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1223 transitions. [2021-11-13 17:42:27,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 17:42:27,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:27,627 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:27,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:27,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:27,836 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:27,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1396240182, now seen corresponding path program 1 times [2021-11-13 17:42:27,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:27,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730311583] [2021-11-13 17:42:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:27,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:27,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:27,840 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:27,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:42:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:28,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 17:42:28,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 17:42:28,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 17:42:30,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:30,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730311583] [2021-11-13 17:42:30,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730311583] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:30,640 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:30,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-13 17:42:30,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562465410] [2021-11-13 17:42:30,641 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:30,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 17:42:30,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:30,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 17:42:30,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-13 17:42:30,643 INFO L87 Difference]: Start difference. First operand 907 states and 1223 transitions. Second operand has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 18 states have internal predecessors, (96), 8 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (16), 11 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-13 17:42:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:32,090 INFO L93 Difference]: Finished difference Result 1965 states and 2680 transitions. [2021-11-13 17:42:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:42:32,091 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 18 states have internal predecessors, (96), 8 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (16), 11 states have call predecessors, (16), 7 states have call successors, (16) Word has length 134 [2021-11-13 17:42:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:32,099 INFO L225 Difference]: With dead ends: 1965 [2021-11-13 17:42:32,100 INFO L226 Difference]: Without dead ends: 1067 [2021-11-13 17:42:32,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-11-13 17:42:32,104 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 477 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 883.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 4891 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.47ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1022.29ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:32,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 4891 Invalid, 273 Unknown, 0 Unchecked, 18.47ms Time], IncrementalHoareTripleChecker [56 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 1022.29ms Time] [2021-11-13 17:42:32,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-11-13 17:42:32,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 895. [2021-11-13 17:42:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 726 states have (on average 1.3305785123966942) internal successors, (966), 726 states have internal predecessors, (966), 114 states have call successors, (114), 55 states have call predecessors, (114), 54 states have return successors, (119), 113 states have call predecessors, (119), 113 states have call successors, (119) [2021-11-13 17:42:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1199 transitions. [2021-11-13 17:42:32,213 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1199 transitions. Word has length 134 [2021-11-13 17:42:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:32,215 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1199 transitions. [2021-11-13 17:42:32,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 18 states have internal predecessors, (96), 8 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (16), 11 states have call predecessors, (16), 7 states have call successors, (16) [2021-11-13 17:42:32,216 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1199 transitions. [2021-11-13 17:42:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-13 17:42:32,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:32,223 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:32,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:32,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:32,437 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:32,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1747283074, now seen corresponding path program 1 times [2021-11-13 17:42:32,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:32,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750675729] [2021-11-13 17:42:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:32,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:32,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:32,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:32,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:42:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:32,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:42:32,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-13 17:42:33,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 17:42:33,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:33,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750675729] [2021-11-13 17:42:33,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750675729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:33,587 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:33,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:42:33,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287527746] [2021-11-13 17:42:33,587 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:33,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:42:33,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:42:33,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:42:33,590 INFO L87 Difference]: Start difference. First operand 895 states and 1199 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:42:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:33,702 INFO L93 Difference]: Finished difference Result 1929 states and 2614 transitions. [2021-11-13 17:42:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:42:33,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 165 [2021-11-13 17:42:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:33,711 INFO L225 Difference]: With dead ends: 1929 [2021-11-13 17:42:33,711 INFO L226 Difference]: Without dead ends: 1043 [2021-11-13 17:42:33,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:42:33,714 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 108 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.20ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:33,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 692 Invalid, 5 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 15.20ms Time] [2021-11-13 17:42:33,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-11-13 17:42:33,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 883. [2021-11-13 17:42:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 720 states have (on average 1.325) internal successors, (954), 720 states have internal predecessors, (954), 108 states have call successors, (108), 55 states have call predecessors, (108), 54 states have return successors, (113), 107 states have call predecessors, (113), 107 states have call successors, (113) [2021-11-13 17:42:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1175 transitions. [2021-11-13 17:42:33,791 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1175 transitions. Word has length 165 [2021-11-13 17:42:33,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:33,791 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1175 transitions. [2021-11-13 17:42:33,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:42:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1175 transitions. [2021-11-13 17:42:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-13 17:42:33,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:33,797 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:33,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:34,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:34,013 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:34,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1434773186, now seen corresponding path program 1 times [2021-11-13 17:42:34,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:34,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889047081] [2021-11-13 17:42:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:34,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:34,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:34,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:34,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:42:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:34,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:42:34,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-13 17:42:34,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 17:42:35,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:35,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889047081] [2021-11-13 17:42:35,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889047081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:35,267 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:35,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 17:42:35,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241860556] [2021-11-13 17:42:35,267 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:35,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:42:35,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:42:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:42:35,269 INFO L87 Difference]: Start difference. First operand 883 states and 1175 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:42:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:36,971 INFO L93 Difference]: Finished difference Result 1941 states and 2626 transitions. [2021-11-13 17:42:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:42:36,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 165 [2021-11-13 17:42:36,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:36,981 INFO L225 Difference]: With dead ends: 1941 [2021-11-13 17:42:36,981 INFO L226 Difference]: Without dead ends: 1049 [2021-11-13 17:42:36,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:42:36,985 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 217 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1562.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.61ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1609.69ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:36,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 1112 Invalid, 31 Unknown, 0 Unchecked, 3.61ms Time], IncrementalHoareTripleChecker [13 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1609.69ms Time] [2021-11-13 17:42:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2021-11-13 17:42:37,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 889. [2021-11-13 17:42:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 726 states have (on average 1.322314049586777) internal successors, (960), 726 states have internal predecessors, (960), 108 states have call successors, (108), 55 states have call predecessors, (108), 54 states have return successors, (113), 107 states have call predecessors, (113), 107 states have call successors, (113) [2021-11-13 17:42:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1181 transitions. [2021-11-13 17:42:37,053 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1181 transitions. Word has length 165 [2021-11-13 17:42:37,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:37,053 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1181 transitions. [2021-11-13 17:42:37,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:42:37,054 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1181 transitions. [2021-11-13 17:42:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-13 17:42:37,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:37,058 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:37,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-13 17:42:37,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:37,273 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1642622242, now seen corresponding path program 1 times [2021-11-13 17:42:37,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:37,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234456346] [2021-11-13 17:42:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:37,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:37,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:37,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:37,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:42:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:37,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:42:37,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-13 17:42:38,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 17:42:38,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:38,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234456346] [2021-11-13 17:42:38,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234456346] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:42:38,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:42:38,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-13 17:42:38,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915045801] [2021-11-13 17:42:38,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:42:38,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:42:38,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:38,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:42:38,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:42:38,576 INFO L87 Difference]: Start difference. First operand 889 states and 1181 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:42:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:41,093 INFO L93 Difference]: Finished difference Result 1953 states and 2632 transitions. [2021-11-13 17:42:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:42:41,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 166 [2021-11-13 17:42:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:41,103 INFO L225 Difference]: With dead ends: 1953 [2021-11-13 17:42:41,103 INFO L226 Difference]: Without dead ends: 1055 [2021-11-13 17:42:41,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:42:41,107 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 221 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2331.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2421.86ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:41,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 1723 Invalid, 54 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 2421.86ms Time] [2021-11-13 17:42:41,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2021-11-13 17:42:41,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 895. [2021-11-13 17:42:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 732 states have (on average 1.319672131147541) internal successors, (966), 732 states have internal predecessors, (966), 108 states have call successors, (108), 55 states have call predecessors, (108), 54 states have return successors, (113), 107 states have call predecessors, (113), 107 states have call successors, (113) [2021-11-13 17:42:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1187 transitions. [2021-11-13 17:42:41,178 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1187 transitions. Word has length 166 [2021-11-13 17:42:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:41,178 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1187 transitions. [2021-11-13 17:42:41,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:42:41,179 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1187 transitions. [2021-11-13 17:42:41,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-13 17:42:41,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:41,184 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:41,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-13 17:42:41,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:41,397 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:41,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash -503991614, now seen corresponding path program 2 times [2021-11-13 17:42:41,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:41,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149915285] [2021-11-13 17:42:41,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:42:41,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:41,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:41,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:41,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:42:42,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:42:42,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:42:42,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 17:42:42,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 35 proven. 28 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-13 17:42:42,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-13 17:42:43,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:43,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149915285] [2021-11-13 17:42:43,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149915285] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 17:42:43,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:42:43,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2021-11-13 17:42:43,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671479561] [2021-11-13 17:42:43,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:43,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:42:43,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:43,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:42:43,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:42:43,729 INFO L87 Difference]: Start difference. First operand 895 states and 1187 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-13 17:42:48,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:48,669 INFO L93 Difference]: Finished difference Result 2902 states and 3858 transitions. [2021-11-13 17:42:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 17:42:48,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 167 [2021-11-13 17:42:48,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:48,693 INFO L225 Difference]: With dead ends: 2902 [2021-11-13 17:42:48,693 INFO L226 Difference]: Without dead ends: 2407 [2021-11-13 17:42:48,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2021-11-13 17:42:48,697 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 962 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3834.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.50ms SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4193.14ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:48,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 1597 Invalid, 983 Unknown, 0 Unchecked, 17.50ms Time], IncrementalHoareTripleChecker [233 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 4193.14ms Time] [2021-11-13 17:42:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2021-11-13 17:42:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2227. [2021-11-13 17:42:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1818 states have (on average 1.3217821782178218) internal successors, (2403), 1824 states have internal predecessors, (2403), 267 states have call successors, (267), 136 states have call predecessors, (267), 141 states have return successors, (293), 266 states have call predecessors, (293), 266 states have call successors, (293) [2021-11-13 17:42:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2963 transitions. [2021-11-13 17:42:48,892 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2963 transitions. Word has length 167 [2021-11-13 17:42:48,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:48,893 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 2963 transitions. [2021-11-13 17:42:48,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-13 17:42:48,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2963 transitions. [2021-11-13 17:42:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-13 17:42:48,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:48,902 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:48,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:49,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:49,122 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:49,123 INFO L85 PathProgramCache]: Analyzing trace with hash 746786563, now seen corresponding path program 1 times [2021-11-13 17:42:49,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:49,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984104134] [2021-11-13 17:42:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:49,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:49,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:49,125 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:49,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:42:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:49,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:42:49,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-13 17:42:49,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 17:42:50,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:50,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984104134] [2021-11-13 17:42:50,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984104134] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:42:50,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:42:50,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-13 17:42:50,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767956158] [2021-11-13 17:42:50,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:42:50,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 17:42:50,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 17:42:50,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:42:50,580 INFO L87 Difference]: Start difference. First operand 2227 states and 2963 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:42:55,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:55,974 INFO L93 Difference]: Finished difference Result 4665 states and 6250 transitions. [2021-11-13 17:42:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:42:55,975 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 169 [2021-11-13 17:42:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:55,993 INFO L225 Difference]: With dead ends: 4665 [2021-11-13 17:42:55,993 INFO L226 Difference]: Without dead ends: 2402 [2021-11-13 17:42:56,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:42:56,001 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 117 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5059.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.98ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5220.55ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:56,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 2216 Invalid, 63 Unknown, 0 Unchecked, 4.98ms Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 5220.55ms Time] [2021-11-13 17:42:56,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2021-11-13 17:42:56,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2242. [2021-11-13 17:42:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 1833 states have (on average 1.3191489361702127) internal successors, (2418), 1839 states have internal predecessors, (2418), 267 states have call successors, (267), 136 states have call predecessors, (267), 141 states have return successors, (293), 266 states have call predecessors, (293), 266 states have call successors, (293) [2021-11-13 17:42:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2978 transitions. [2021-11-13 17:42:56,203 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 2978 transitions. Word has length 169 [2021-11-13 17:42:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:56,204 INFO L470 AbstractCegarLoop]: Abstraction has 2242 states and 2978 transitions. [2021-11-13 17:42:56,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:42:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 2978 transitions. [2021-11-13 17:42:56,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-13 17:42:56,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:56,211 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:56,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:56,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:56,433 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1258527389, now seen corresponding path program 2 times [2021-11-13 17:42:56,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:56,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690094246] [2021-11-13 17:42:56,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:42:56,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:56,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:56,435 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:56,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:42:56,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 17:42:56,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:42:56,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:42:56,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 17:42:56,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 17:42:57,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:57,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690094246] [2021-11-13 17:42:57,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690094246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:57,279 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:57,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:42:57,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652617817] [2021-11-13 17:42:57,280 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:57,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:42:57,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:57,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:42:57,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:42:57,282 INFO L87 Difference]: Start difference. First operand 2242 states and 2978 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 17:42:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:57,647 INFO L93 Difference]: Finished difference Result 4757 states and 6380 transitions. [2021-11-13 17:42:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:42:57,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 170 [2021-11-13 17:42:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:57,668 INFO L225 Difference]: With dead ends: 4757 [2021-11-13 17:42:57,668 INFO L226 Difference]: Without dead ends: 2524 [2021-11-13 17:42:57,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:42:57,675 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 29 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 194.50ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:57,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 1080 Invalid, 59 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 194.50ms Time] [2021-11-13 17:42:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2021-11-13 17:42:57,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 2356. [2021-11-13 17:42:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 1947 states have (on average 1.3281972265023112) internal successors, (2586), 1953 states have internal predecessors, (2586), 267 states have call successors, (267), 136 states have call predecessors, (267), 141 states have return successors, (293), 266 states have call predecessors, (293), 266 states have call successors, (293) [2021-11-13 17:42:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3146 transitions. [2021-11-13 17:42:57,883 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3146 transitions. Word has length 170 [2021-11-13 17:42:57,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:57,884 INFO L470 AbstractCegarLoop]: Abstraction has 2356 states and 3146 transitions. [2021-11-13 17:42:57,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-13 17:42:57,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3146 transitions. [2021-11-13 17:42:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-13 17:42:57,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:57,891 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:57,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:58,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:58,106 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:58,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1625989218, now seen corresponding path program 1 times [2021-11-13 17:42:58,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:58,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682080812] [2021-11-13 17:42:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:58,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:58,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:58,109 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:58,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 17:42:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:58,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:42:58,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:59,043 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 28 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-13 17:42:59,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 17:42:59,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:59,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682080812] [2021-11-13 17:42:59,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682080812] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 17:42:59,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:42:59,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-13 17:42:59,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304263458] [2021-11-13 17:42:59,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:59,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:42:59,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:59,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:42:59,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:42:59,656 INFO L87 Difference]: Start difference. First operand 2356 states and 3146 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-13 17:43:01,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:43:01,549 INFO L93 Difference]: Finished difference Result 4592 states and 6143 transitions. [2021-11-13 17:43:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:43:01,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 172 [2021-11-13 17:43:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:43:01,565 INFO L225 Difference]: With dead ends: 4592 [2021-11-13 17:43:01,565 INFO L226 Difference]: Without dead ends: 2221 [2021-11-13 17:43:01,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:43:01,572 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 292 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1573.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.63ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1692.09ms IncrementalHoareTripleChecker+Time [2021-11-13 17:43:01,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 643 Invalid, 272 Unknown, 0 Unchecked, 4.63ms Time], IncrementalHoareTripleChecker [53 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1692.09ms Time] [2021-11-13 17:43:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2021-11-13 17:43:01,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 2203. [2021-11-13 17:43:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1815 states have (on average 1.3305785123966942) internal successors, (2415), 1824 states have internal predecessors, (2415), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:43:01,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2948 transitions. [2021-11-13 17:43:01,729 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2948 transitions. Word has length 172 [2021-11-13 17:43:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:43:01,730 INFO L470 AbstractCegarLoop]: Abstraction has 2203 states and 2948 transitions. [2021-11-13 17:43:01,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-13 17:43:01,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2948 transitions. [2021-11-13 17:43:01,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-13 17:43:01,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:43:01,735 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:43:01,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 17:43:01,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:43:01,961 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:43:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:43:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1798759286, now seen corresponding path program 1 times [2021-11-13 17:43:01,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:43:01,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537388525] [2021-11-13 17:43:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:43:01,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:43:01,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:43:01,965 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:43:01,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 17:43:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:02,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:43:02,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:43:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-13 17:43:03,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:43:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-13 17:43:03,881 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:43:03,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537388525] [2021-11-13 17:43:03,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537388525] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:43:03,882 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:43:03,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-13 17:43:03,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711127610] [2021-11-13 17:43:03,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:43:03,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 17:43:03,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:43:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 17:43:03,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:43:03,884 INFO L87 Difference]: Start difference. First operand 2203 states and 2948 transitions. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:43:11,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:43:11,884 INFO L93 Difference]: Finished difference Result 4171 states and 5592 transitions. [2021-11-13 17:43:11,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:43:11,886 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 172 [2021-11-13 17:43:11,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:43:11,901 INFO L225 Difference]: With dead ends: 4171 [2021-11-13 17:43:11,901 INFO L226 Difference]: Without dead ends: 2215 [2021-11-13 17:43:11,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-13 17:43:11,908 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 119 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7610.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.09ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7873.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:43:11,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 2217 Invalid, 83 Unknown, 0 Unchecked, 7.09ms Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 7873.80ms Time] [2021-11-13 17:43:11,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2021-11-13 17:43:12,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2215. [2021-11-13 17:43:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 1827 states have (on average 1.3284072249589491) internal successors, (2427), 1836 states have internal predecessors, (2427), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:43:12,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2960 transitions. [2021-11-13 17:43:12,090 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2960 transitions. Word has length 172 [2021-11-13 17:43:12,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:43:12,091 INFO L470 AbstractCegarLoop]: Abstraction has 2215 states and 2960 transitions. [2021-11-13 17:43:12,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:43:12,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2960 transitions. [2021-11-13 17:43:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-13 17:43:12,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:43:12,097 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:43:12,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:43:12,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:43:12,311 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:43:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:43:12,312 INFO L85 PathProgramCache]: Analyzing trace with hash 888384042, now seen corresponding path program 2 times [2021-11-13 17:43:12,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:43:12,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125070848] [2021-11-13 17:43:12,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:43:12,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:43:12,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:43:12,313 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:43:12,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 17:43:13,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:43:13,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:43:13,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 17:43:13,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:43:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-13 17:43:13,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:43:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-13 17:43:14,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:43:14,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125070848] [2021-11-13 17:43:14,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125070848] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:43:14,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:43:14,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-11-13 17:43:14,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100207066] [2021-11-13 17:43:14,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:43:14,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 17:43:14,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:43:14,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 17:43:14,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:43:14,750 INFO L87 Difference]: Start difference. First operand 2215 states and 2960 transitions. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:43:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:43:24,480 INFO L93 Difference]: Finished difference Result 4195 states and 5616 transitions. [2021-11-13 17:43:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:43:24,481 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 173 [2021-11-13 17:43:24,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:43:24,497 INFO L225 Difference]: With dead ends: 4195 [2021-11-13 17:43:24,497 INFO L226 Difference]: Without dead ends: 2227 [2021-11-13 17:43:24,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:43:24,503 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 232 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9283.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.79ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9588.91ms IncrementalHoareTripleChecker+Time [2021-11-13 17:43:24,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 2029 Invalid, 101 Unknown, 0 Unchecked, 5.79ms Time], IncrementalHoareTripleChecker [20 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 9588.91ms Time] [2021-11-13 17:43:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-11-13 17:43:24,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2227. [2021-11-13 17:43:24,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1839 states have (on average 1.3262642740619903) internal successors, (2439), 1848 states have internal predecessors, (2439), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:43:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 2972 transitions. [2021-11-13 17:43:24,682 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 2972 transitions. Word has length 173 [2021-11-13 17:43:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:43:24,683 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 2972 transitions. [2021-11-13 17:43:24,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:43:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 2972 transitions. [2021-11-13 17:43:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-13 17:43:24,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:43:24,688 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:43:24,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 17:43:24,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:43:24,901 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:43:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:43:24,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1709518710, now seen corresponding path program 3 times [2021-11-13 17:43:24,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:43:24,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641032678] [2021-11-13 17:43:24,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:43:24,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:43:24,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:43:24,904 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:43:24,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 17:43:25,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 17:43:25,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:43:25,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:43:25,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:43:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-13 17:43:26,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:43:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-13 17:43:26,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:43:26,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641032678] [2021-11-13 17:43:26,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641032678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:43:26,487 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:43:26,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 17:43:26,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025031113] [2021-11-13 17:43:26,487 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:43:26,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:43:26,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:43:26,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:43:26,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:43:26,490 INFO L87 Difference]: Start difference. First operand 2227 states and 2972 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:43:27,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:43:27,041 INFO L93 Difference]: Finished difference Result 4207 states and 5616 transitions. [2021-11-13 17:43:27,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:43:27,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 174 [2021-11-13 17:43:27,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:43:27,057 INFO L225 Difference]: With dead ends: 4207 [2021-11-13 17:43:27,057 INFO L226 Difference]: Without dead ends: 2239 [2021-11-13 17:43:27,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:43:27,063 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 218 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 381.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 417.24ms IncrementalHoareTripleChecker+Time [2021-11-13 17:43:27,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 805 Invalid, 25 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [12 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 417.24ms Time] [2021-11-13 17:43:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2021-11-13 17:43:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 2239. [2021-11-13 17:43:27,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 1851 states have (on average 1.3241491085899513) internal successors, (2451), 1860 states have internal predecessors, (2451), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:43:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 2984 transitions. [2021-11-13 17:43:27,217 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 2984 transitions. Word has length 174 [2021-11-13 17:43:27,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:43:27,218 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 2984 transitions. [2021-11-13 17:43:27,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:43:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 2984 transitions. [2021-11-13 17:43:27,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 17:43:27,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:43:27,223 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:43:27,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:43:27,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:43:27,437 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:43:27,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:43:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash 592859884, now seen corresponding path program 1 times [2021-11-13 17:43:27,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:43:27,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011946262] [2021-11-13 17:43:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:43:27,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:43:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:43:27,439 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:43:27,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 17:43:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:27,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:43:27,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:43:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 17:43:28,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:43:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-13 17:43:29,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:43:29,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011946262] [2021-11-13 17:43:29,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011946262] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:43:29,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:43:29,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-11-13 17:43:29,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991292612] [2021-11-13 17:43:29,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:43:29,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 17:43:29,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:43:29,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 17:43:29,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:43:29,610 INFO L87 Difference]: Start difference. First operand 2239 states and 2984 transitions. Second operand has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 17 states have internal predecessors, (126), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:43:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:43:50,269 INFO L93 Difference]: Finished difference Result 4255 states and 5676 transitions. [2021-11-13 17:43:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 17:43:50,270 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 17 states have internal predecessors, (126), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 175 [2021-11-13 17:43:50,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:43:50,299 INFO L225 Difference]: With dead ends: 4255 [2021-11-13 17:43:50,299 INFO L226 Difference]: Without dead ends: 2251 [2021-11-13 17:43:50,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:43:50,305 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 233 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19896.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.73ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20497.47ms IncrementalHoareTripleChecker+Time [2021-11-13 17:43:50,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 3257 Invalid, 146 Unknown, 0 Unchecked, 4.73ms Time], IncrementalHoareTripleChecker [22 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 20497.47ms Time] [2021-11-13 17:43:50,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2021-11-13 17:43:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2251. [2021-11-13 17:43:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1863 states have (on average 1.3220611916264091) internal successors, (2463), 1872 states have internal predecessors, (2463), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:43:50,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 2996 transitions. [2021-11-13 17:43:50,462 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 2996 transitions. Word has length 175 [2021-11-13 17:43:50,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:43:50,462 INFO L470 AbstractCegarLoop]: Abstraction has 2251 states and 2996 transitions. [2021-11-13 17:43:50,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 17 states have internal predecessors, (126), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:43:50,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 2996 transitions. [2021-11-13 17:43:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-13 17:43:50,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:43:50,471 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:43:50,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:43:50,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:43:50,696 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:43:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:43:50,696 INFO L85 PathProgramCache]: Analyzing trace with hash -615685812, now seen corresponding path program 2 times [2021-11-13 17:43:50,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:43:50,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615580615] [2021-11-13 17:43:50,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:43:50,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:43:50,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:43:50,699 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:43:50,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 17:43:51,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:43:51,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:43:51,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 17:43:51,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:43:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 17:43:52,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:43:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-13 17:43:54,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:43:54,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615580615] [2021-11-13 17:43:54,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615580615] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:43:54,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:43:54,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-11-13 17:43:54,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362949078] [2021-11-13 17:43:54,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:43:54,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-13 17:43:54,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:43:54,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-13 17:43:54,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-11-13 17:43:54,006 INFO L87 Difference]: Start difference. First operand 2251 states and 2996 transitions. Second operand has 19 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 19 states have internal predecessors, (128), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:44:16,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:44:16,692 INFO L93 Difference]: Finished difference Result 4279 states and 5700 transitions. [2021-11-13 17:44:16,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:44:16,693 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 19 states have internal predecessors, (128), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 176 [2021-11-13 17:44:16,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:44:16,705 INFO L225 Difference]: With dead ends: 4279 [2021-11-13 17:44:16,705 INFO L226 Difference]: Without dead ends: 2263 [2021-11-13 17:44:16,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-11-13 17:44:16,712 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 129 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21815.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 3750 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.59ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22570.32ms IncrementalHoareTripleChecker+Time [2021-11-13 17:44:16,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 3750 Invalid, 162 Unknown, 0 Unchecked, 4.59ms Time], IncrementalHoareTripleChecker [12 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 22570.32ms Time] [2021-11-13 17:44:16,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2021-11-13 17:44:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2021-11-13 17:44:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1875 states have (on average 1.32) internal successors, (2475), 1884 states have internal predecessors, (2475), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:44:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3008 transitions. [2021-11-13 17:44:16,887 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3008 transitions. Word has length 176 [2021-11-13 17:44:16,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:44:16,887 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 3008 transitions. [2021-11-13 17:44:16,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 19 states have internal predecessors, (128), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:44:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3008 transitions. [2021-11-13 17:44:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-13 17:44:16,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:44:16,892 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:44:16,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:44:17,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:44:17,105 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:44:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:44:17,106 INFO L85 PathProgramCache]: Analyzing trace with hash 574103276, now seen corresponding path program 3 times [2021-11-13 17:44:17,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:44:17,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500014421] [2021-11-13 17:44:17,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:44:17,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:44:17,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:44:17,107 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:44:17,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 17:44:18,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-13 17:44:18,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:44:18,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:44:18,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:44:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-13 17:44:18,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:44:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-13 17:44:19,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:44:19,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500014421] [2021-11-13 17:44:19,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500014421] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:44:19,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:44:19,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-13 17:44:19,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036857227] [2021-11-13 17:44:19,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:44:19,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:44:19,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:44:19,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:44:19,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:44:19,126 INFO L87 Difference]: Start difference. First operand 2263 states and 3008 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:44:19,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:44:19,954 INFO L93 Difference]: Finished difference Result 4279 states and 5688 transitions. [2021-11-13 17:44:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:44:19,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 177 [2021-11-13 17:44:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:44:19,966 INFO L225 Difference]: With dead ends: 4279 [2021-11-13 17:44:19,966 INFO L226 Difference]: Without dead ends: 2275 [2021-11-13 17:44:19,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:44:19,973 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 112 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 653.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 688.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:44:19,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1301 Invalid, 32 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 688.90ms Time] [2021-11-13 17:44:19,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2021-11-13 17:44:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2275. [2021-11-13 17:44:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1887 states have (on average 1.3179650238473768) internal successors, (2487), 1896 states have internal predecessors, (2487), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:44:20,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 3020 transitions. [2021-11-13 17:44:20,140 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 3020 transitions. Word has length 177 [2021-11-13 17:44:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:44:20,142 INFO L470 AbstractCegarLoop]: Abstraction has 2275 states and 3020 transitions. [2021-11-13 17:44:20,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:44:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 3020 transitions. [2021-11-13 17:44:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-13 17:44:20,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:44:20,147 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:44:20,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 17:44:20,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:44:20,361 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:44:20,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:44:20,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1629302582, now seen corresponding path program 4 times [2021-11-13 17:44:20,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:44:20,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577190514] [2021-11-13 17:44:20,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:44:20,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:44:20,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:44:20,364 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:44:20,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 17:44:20,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:44:20,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:44:20,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 17:44:20,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:44:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-13 17:44:21,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:44:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-13 17:44:23,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:44:23,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577190514] [2021-11-13 17:44:23,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577190514] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:44:23,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:44:23,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-11-13 17:44:23,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218550666] [2021-11-13 17:44:23,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:44:23,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 17:44:23,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:44:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 17:44:23,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-11-13 17:44:23,249 INFO L87 Difference]: Start difference. First operand 2275 states and 3020 transitions. Second operand has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 21 states have internal predecessors, (130), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:44:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:44:52,248 INFO L93 Difference]: Finished difference Result 4339 states and 5760 transitions. [2021-11-13 17:44:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:44:52,249 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 21 states have internal predecessors, (130), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 178 [2021-11-13 17:44:52,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:44:52,257 INFO L225 Difference]: With dead ends: 4339 [2021-11-13 17:44:52,257 INFO L226 Difference]: Without dead ends: 2287 [2021-11-13 17:44:52,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-11-13 17:44:52,263 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 132 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27949.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28863.69ms IncrementalHoareTripleChecker+Time [2021-11-13 17:44:52,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 3445 Invalid, 182 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [14 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 28863.69ms Time] [2021-11-13 17:44:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2021-11-13 17:44:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 2287. [2021-11-13 17:44:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1899 states have (on average 1.315955766192733) internal successors, (2499), 1908 states have internal predecessors, (2499), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:44:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3032 transitions. [2021-11-13 17:44:52,410 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3032 transitions. Word has length 178 [2021-11-13 17:44:52,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:44:52,411 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 3032 transitions. [2021-11-13 17:44:52,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 21 states have internal predecessors, (130), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:44:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3032 transitions. [2021-11-13 17:44:52,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-13 17:44:52,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:44:52,415 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:44:52,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 17:44:52,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:44:52,625 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:44:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:44:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash -703289750, now seen corresponding path program 5 times [2021-11-13 17:44:52,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:44:52,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878744558] [2021-11-13 17:44:52,627 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:44:52,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:44:52,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:44:52,628 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:44:52,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 17:44:58,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-13 17:44:58,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:44:58,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:44:58,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:44:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 17:44:58,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:44:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-13 17:44:59,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:44:59,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878744558] [2021-11-13 17:44:59,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878744558] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:44:59,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:44:59,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-13 17:44:59,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995010796] [2021-11-13 17:44:59,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:44:59,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 17:44:59,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:44:59,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 17:44:59,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:44:59,609 INFO L87 Difference]: Start difference. First operand 2287 states and 3032 transitions. Second operand has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:45:00,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:00,852 INFO L93 Difference]: Finished difference Result 4327 states and 5736 transitions. [2021-11-13 17:45:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:45:00,853 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 179 [2021-11-13 17:45:00,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:00,861 INFO L225 Difference]: With dead ends: 4327 [2021-11-13 17:45:00,861 INFO L226 Difference]: Without dead ends: 2299 [2021-11-13 17:45:00,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:45:00,867 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 113 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1037.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.60ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1088.54ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:00,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 1609 Invalid, 45 Unknown, 0 Unchecked, 2.60ms Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 1088.54ms Time] [2021-11-13 17:45:00,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2021-11-13 17:45:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2021-11-13 17:45:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1911 states have (on average 1.3139717425431712) internal successors, (2511), 1920 states have internal predecessors, (2511), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:45:01,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3044 transitions. [2021-11-13 17:45:01,005 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3044 transitions. Word has length 179 [2021-11-13 17:45:01,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:01,006 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 3044 transitions. [2021-11-13 17:45:01,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.909090909090908) internal successors, (120), 11 states have internal predecessors, (120), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:45:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3044 transitions. [2021-11-13 17:45:01,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-13 17:45:01,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:01,010 INFO L514 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:01,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:01,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:45:01,227 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:45:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1721186572, now seen corresponding path program 6 times [2021-11-13 17:45:01,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:45:01,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124387426] [2021-11-13 17:45:01,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 17:45:01,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:45:01,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:45:01,230 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:45:01,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 17:45:05,701 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-13 17:45:05,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:45:05,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 17:45:05,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 17:45:06,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:45:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:45:08,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:45:08,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124387426] [2021-11-13 17:45:08,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124387426] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:45:08,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:45:08,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-11-13 17:45:08,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733884135] [2021-11-13 17:45:08,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:45:08,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-13 17:45:08,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:45:08,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-13 17:45:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-11-13 17:45:08,718 INFO L87 Difference]: Start difference. First operand 2299 states and 3044 transitions. Second operand has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:45:57,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:45:58,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:58,784 INFO L93 Difference]: Finished difference Result 4399 states and 5820 transitions. [2021-11-13 17:45:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:45:58,787 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 180 [2021-11-13 17:45:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:58,793 INFO L225 Difference]: With dead ends: 4399 [2021-11-13 17:45:58,793 INFO L226 Difference]: Without dead ends: 2311 [2021-11-13 17:45:58,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:45:58,798 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 245 mSDsluCounter, 5074 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48332.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 5381 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.10ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49913.19ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:58,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 5381 Invalid, 290 Unknown, 0 Unchecked, 6.10ms Time], IncrementalHoareTripleChecker [21 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 49913.19ms Time] [2021-11-13 17:45:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2021-11-13 17:45:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2311. [2021-11-13 17:45:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 1923 states have (on average 1.31201248049922) internal successors, (2523), 1932 states have internal predecessors, (2523), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:45:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3056 transitions. [2021-11-13 17:45:58,938 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3056 transitions. Word has length 180 [2021-11-13 17:45:58,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:58,939 INFO L470 AbstractCegarLoop]: Abstraction has 2311 states and 3056 transitions. [2021-11-13 17:45:58,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:45:58,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3056 transitions. [2021-11-13 17:45:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-13 17:45:58,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:58,943 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:58,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:59,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:45:59,165 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:45:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1733679444, now seen corresponding path program 7 times [2021-11-13 17:45:59,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:45:59,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141139699] [2021-11-13 17:45:59,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 17:45:59,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:45:59,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:45:59,168 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:45:59,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 17:45:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:59,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 17:45:59,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 11 proven. 45 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 17:46:00,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:46:02,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:02,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141139699] [2021-11-13 17:46:02,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141139699] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:46:02,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:46:02,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-11-13 17:46:02,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091650248] [2021-11-13 17:46:02,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:46:02,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-13 17:46:02,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:02,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-13 17:46:02,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2021-11-13 17:46:02,850 INFO L87 Difference]: Start difference. First operand 2311 states and 3056 transitions. Second operand has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:46:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:41,899 INFO L93 Difference]: Finished difference Result 4423 states and 5844 transitions. [2021-11-13 17:46:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:46:41,900 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 181 [2021-11-13 17:46:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:41,907 INFO L225 Difference]: With dead ends: 4423 [2021-11-13 17:46:41,907 INFO L226 Difference]: Without dead ends: 2323 [2021-11-13 17:46:41,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2021-11-13 17:46:41,912 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 138 mSDsluCounter, 4057 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37502.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 4365 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38895.42ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:41,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 4365 Invalid, 251 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [18 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 38895.42ms Time] [2021-11-13 17:46:41,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2021-11-13 17:46:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2323. [2021-11-13 17:46:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 1935 states have (on average 1.310077519379845) internal successors, (2535), 1944 states have internal predecessors, (2535), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:46:42,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3068 transitions. [2021-11-13 17:46:42,034 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3068 transitions. Word has length 181 [2021-11-13 17:46:42,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:42,034 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 3068 transitions. [2021-11-13 17:46:42,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:46:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3068 transitions. [2021-11-13 17:46:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-13 17:46:42,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:42,053 INFO L514 BasicCegarLoop]: trace histogram [10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:42,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:42,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:46:42,269 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:46:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:42,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1460343540, now seen corresponding path program 8 times [2021-11-13 17:46:42,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:46:42,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882112455] [2021-11-13 17:46:42,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:46:42,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:46:42,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:46:42,271 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:46:42,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-13 17:46:43,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:46:43,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:46:43,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 17:46:43,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 17:46:43,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 7 proven. 55 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:46:46,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:46,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882112455] [2021-11-13 17:46:46,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882112455] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:46:46,527 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:46:46,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-11-13 17:46:46,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212187830] [2021-11-13 17:46:46,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:46:46,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-13 17:46:46,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:46,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-13 17:46:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-11-13 17:46:46,529 INFO L87 Difference]: Start difference. First operand 2323 states and 3068 transitions. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:47:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:33,064 INFO L93 Difference]: Finished difference Result 4447 states and 5868 transitions. [2021-11-13 17:47:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:47:33,066 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 182 [2021-11-13 17:47:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:33,073 INFO L225 Difference]: With dead ends: 4447 [2021-11-13 17:47:33,073 INFO L226 Difference]: Without dead ends: 2335 [2021-11-13 17:47:33,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-11-13 17:47:33,079 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 141 mSDsluCounter, 4058 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44887.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46381.64ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:33,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 4366 Invalid, 279 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [20 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 46381.64ms Time] [2021-11-13 17:47:33,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-11-13 17:47:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2335. [2021-11-13 17:47:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 1947 states have (on average 1.308166409861325) internal successors, (2547), 1956 states have internal predecessors, (2547), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:47:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3080 transitions. [2021-11-13 17:47:33,206 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3080 transitions. Word has length 182 [2021-11-13 17:47:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:33,207 INFO L470 AbstractCegarLoop]: Abstraction has 2335 states and 3080 transitions. [2021-11-13 17:47:33,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:47:33,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3080 transitions. [2021-11-13 17:47:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 17:47:33,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:33,211 INFO L514 BasicCegarLoop]: trace histogram [11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:33,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:33,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:33,411 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:47:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1576865108, now seen corresponding path program 9 times [2021-11-13 17:47:33,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:33,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229787846] [2021-11-13 17:47:33,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:47:33,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:33,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:33,414 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:33,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-13 17:47:43,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 17:47:43,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:47:43,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 17:47:43,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 11 proven. 66 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 17:47:44,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 7 proven. 66 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:47:47,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:47,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229787846] [2021-11-13 17:47:47,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229787846] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:47:47,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:47:47,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2021-11-13 17:47:47,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773421928] [2021-11-13 17:47:47,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:47:47,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-13 17:47:47,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-13 17:47:47,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2021-11-13 17:47:47,434 INFO L87 Difference]: Start difference. First operand 2335 states and 3080 transitions. Second operand has 29 states, 29 states have (on average 4.758620689655173) internal successors, (138), 29 states have internal predecessors, (138), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:48:23,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:46,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:48:59,742 INFO L93 Difference]: Finished difference Result 4471 states and 5892 transitions. [2021-11-13 17:48:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 17:48:59,743 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.758620689655173) internal successors, (138), 29 states have internal predecessors, (138), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 183 [2021-11-13 17:48:59,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:48:59,751 INFO L225 Difference]: With dead ends: 4471 [2021-11-13 17:48:59,751 INFO L226 Difference]: Without dead ends: 2347 [2021-11-13 17:48:59,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2021-11-13 17:48:59,757 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 151 mSDsluCounter, 5567 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69846.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 5874 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.15ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72132.98ms IncrementalHoareTripleChecker+Time [2021-11-13 17:48:59,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 5874 Invalid, 379 Unknown, 0 Unchecked, 7.15ms Time], IncrementalHoareTripleChecker [12 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 72132.98ms Time] [2021-11-13 17:48:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2021-11-13 17:48:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2347. [2021-11-13 17:48:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 1959 states have (on average 1.3062787136294027) internal successors, (2559), 1968 states have internal predecessors, (2559), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:48:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3092 transitions. [2021-11-13 17:48:59,930 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3092 transitions. Word has length 183 [2021-11-13 17:48:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:48:59,931 INFO L470 AbstractCegarLoop]: Abstraction has 2347 states and 3092 transitions. [2021-11-13 17:48:59,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.758620689655173) internal successors, (138), 29 states have internal predecessors, (138), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:48:59,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3092 transitions. [2021-11-13 17:48:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-13 17:48:59,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:48:59,937 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:48:59,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-13 17:49:00,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:49:00,153 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:49:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:49:00,153 INFO L85 PathProgramCache]: Analyzing trace with hash -894066420, now seen corresponding path program 10 times [2021-11-13 17:49:00,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:49:00,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899224605] [2021-11-13 17:49:00,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:49:00,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:49:00,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:49:00,157 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:49:00,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-13 17:49:01,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:49:01,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:49:01,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 17:49:01,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:49:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 11 proven. 78 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 17:49:01,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:49:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 7 proven. 78 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:49:04,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:49:04,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899224605] [2021-11-13 17:49:04,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899224605] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:49:04,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:49:04,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-11-13 17:49:04,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510548774] [2021-11-13 17:49:04,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:49:04,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-13 17:49:04,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:49:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-13 17:49:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2021-11-13 17:49:04,948 INFO L87 Difference]: Start difference. First operand 2347 states and 3092 transitions. Second operand has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 31 states have internal predecessors, (140), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:49:46,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:17,030 INFO L93 Difference]: Finished difference Result 4495 states and 5916 transitions. [2021-11-13 17:50:17,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 17:50:17,030 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 31 states have internal predecessors, (140), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 184 [2021-11-13 17:50:17,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:17,037 INFO L225 Difference]: With dead ends: 4495 [2021-11-13 17:50:17,037 INFO L226 Difference]: Without dead ends: 2359 [2021-11-13 17:50:17,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-11-13 17:50:17,041 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 258 mSDsluCounter, 4483 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69612.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 4791 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.64ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71911.64ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:17,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 4791 Invalid, 380 Unknown, 0 Unchecked, 6.64ms Time], IncrementalHoareTripleChecker [36 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 71911.64ms Time] [2021-11-13 17:50:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2021-11-13 17:50:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2359. [2021-11-13 17:50:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 1971 states have (on average 1.30441400304414) internal successors, (2571), 1980 states have internal predecessors, (2571), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:50:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 3104 transitions. [2021-11-13 17:50:17,177 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 3104 transitions. Word has length 184 [2021-11-13 17:50:17,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:17,178 INFO L470 AbstractCegarLoop]: Abstraction has 2359 states and 3104 transitions. [2021-11-13 17:50:17,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.516129032258065) internal successors, (140), 31 states have internal predecessors, (140), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:50:17,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 3104 transitions. [2021-11-13 17:50:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-13 17:50:17,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:17,183 INFO L514 BasicCegarLoop]: trace histogram [13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:50:17,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-13 17:50:17,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:50:17,405 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1202143572, now seen corresponding path program 11 times [2021-11-13 17:50:17,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:50:17,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855493128] [2021-11-13 17:50:17,407 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:50:17,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:50:17,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:50:17,409 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:50:17,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-13 17:50:34,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-13 17:50:34,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:50:34,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 17:50:34,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:50:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 11 proven. 91 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 17:50:35,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:50:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 7 proven. 91 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:50:39,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:50:39,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855493128] [2021-11-13 17:50:39,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855493128] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:50:39,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:50:39,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2021-11-13 17:50:39,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126535670] [2021-11-13 17:50:39,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:50:39,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-13 17:50:39,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:50:39,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-13 17:50:39,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2021-11-13 17:50:39,258 INFO L87 Difference]: Start difference. First operand 2359 states and 3104 transitions. Second operand has 33 states, 33 states have (on average 4.303030303030303) internal successors, (142), 33 states have internal predecessors, (142), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:52:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:00,302 INFO L93 Difference]: Finished difference Result 4519 states and 5940 transitions. [2021-11-13 17:52:00,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 17:52:00,303 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.303030303030303) internal successors, (142), 33 states have internal predecessors, (142), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 185 [2021-11-13 17:52:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:00,311 INFO L225 Difference]: With dead ends: 4519 [2021-11-13 17:52:00,312 INFO L226 Difference]: Without dead ends: 2371 [2021-11-13 17:52:00,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 17:52:00,319 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 264 mSDsluCounter, 5688 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78178.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 5995 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.65ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80887.19ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:00,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 5995 Invalid, 444 Unknown, 0 Unchecked, 6.65ms Time], IncrementalHoareTripleChecker [26 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 80887.19ms Time] [2021-11-13 17:52:00,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2021-11-13 17:52:00,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2371. [2021-11-13 17:52:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 1983 states have (on average 1.302571860816944) internal successors, (2583), 1992 states have internal predecessors, (2583), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:52:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3116 transitions. [2021-11-13 17:52:00,520 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3116 transitions. Word has length 185 [2021-11-13 17:52:00,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:00,521 INFO L470 AbstractCegarLoop]: Abstraction has 2371 states and 3116 transitions. [2021-11-13 17:52:00,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.303030303030303) internal successors, (142), 33 states have internal predecessors, (142), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:52:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3116 transitions. [2021-11-13 17:52:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-13 17:52:00,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:00,526 INFO L514 BasicCegarLoop]: trace histogram [14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:52:00,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:00,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:52:00,748 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:00,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:00,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2132366604, now seen corresponding path program 12 times [2021-11-13 17:52:00,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:52:00,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057620199] [2021-11-13 17:52:00,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-13 17:52:00,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:52:00,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:52:00,753 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:52:00,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-13 17:52:24,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-11-13 17:52:24,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:52:24,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 17:52:24,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 11 proven. 105 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 17:52:25,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 7 proven. 105 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:52:29,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:52:29,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057620199] [2021-11-13 17:52:29,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057620199] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:52:29,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:52:29,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2021-11-13 17:52:29,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308466995] [2021-11-13 17:52:29,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:52:29,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-13 17:52:29,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:52:29,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-13 17:52:29,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 17:52:29,928 INFO L87 Difference]: Start difference. First operand 2371 states and 3116 transitions. Second operand has 35 states, 35 states have (on average 4.114285714285714) internal successors, (144), 35 states have internal predecessors, (144), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:52:31,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:54:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:54:27,215 INFO L93 Difference]: Finished difference Result 4543 states and 5964 transitions. [2021-11-13 17:54:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 17:54:27,216 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.114285714285714) internal successors, (144), 35 states have internal predecessors, (144), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) Word has length 186 [2021-11-13 17:54:27,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:54:27,227 INFO L225 Difference]: With dead ends: 4543 [2021-11-13 17:54:27,228 INFO L226 Difference]: Without dead ends: 2383 [2021-11-13 17:54:27,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=117, Invalid=1143, Unknown=0, NotChecked=0, Total=1260 [2021-11-13 17:54:27,234 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 267 mSDsluCounter, 7214 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113093.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 7521 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.74ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117092.88ms IncrementalHoareTripleChecker+Time [2021-11-13 17:54:27,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 7521 Invalid, 557 Unknown, 0 Unchecked, 9.74ms Time], IncrementalHoareTripleChecker [27 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 117092.88ms Time] [2021-11-13 17:54:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2021-11-13 17:54:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 2383. [2021-11-13 17:54:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2383 states, 1995 states have (on average 1.300751879699248) internal successors, (2595), 2004 states have internal predecessors, (2595), 252 states have call successors, (252), 130 states have call predecessors, (252), 135 states have return successors, (281), 248 states have call predecessors, (281), 251 states have call successors, (281) [2021-11-13 17:54:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 3128 transitions. [2021-11-13 17:54:27,411 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 3128 transitions. Word has length 186 [2021-11-13 17:54:27,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:54:27,412 INFO L470 AbstractCegarLoop]: Abstraction has 2383 states and 3128 transitions. [2021-11-13 17:54:27,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.114285714285714) internal successors, (144), 35 states have internal predecessors, (144), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:54:27,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 3128 transitions. [2021-11-13 17:54:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-13 17:54:27,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:54:27,416 INFO L514 BasicCegarLoop]: trace histogram [15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:54:27,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-13 17:54:27,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:54:27,637 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:54:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:54:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1872000340, now seen corresponding path program 13 times [2021-11-13 17:54:27,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:54:27,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137040204] [2021-11-13 17:54:27,640 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-13 17:54:27,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:54:27,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:54:27,641 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:54:27,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51ce2152-a4a6-421f-aac3-26e1d7f95bb6/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-13 17:54:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:28,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 17:54:28,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 11 proven. 120 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 17:54:29,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 7 proven. 120 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:54:34,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:54:34,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137040204] [2021-11-13 17:54:34,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137040204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:54:34,544 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:54:34,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2021-11-13 17:54:34,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184127075] [2021-11-13 17:54:34,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:54:34,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-13 17:54:34,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:54:34,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-13 17:54:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2021-11-13 17:54:34,546 INFO L87 Difference]: Start difference. First operand 2383 states and 3128 transitions. Second operand has 37 states, 37 states have (on average 3.945945945945946) internal successors, (146), 37 states have internal predecessors, (146), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 17:54:45,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []