./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/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 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:34:01,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:34:01,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:34:01,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:34:01,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:34:01,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:34:01,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:34:01,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:34:01,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:34:01,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:34:01,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:34:01,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:34:01,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:34:01,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:34:01,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:34:01,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:34:01,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:34:01,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:34:01,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:34:01,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:34:01,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:34:01,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:34:01,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:34:01,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:34:01,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:34:01,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:34:01,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:34:01,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:34:01,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:34:01,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:34:01,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:34:01,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:34:01,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:34:01,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:34:01,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:34:01,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:34:01,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:34:01,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:34:01,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:34:01,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:34:01,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:34:01,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:34:01,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:34:01,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:34:01,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:34:01,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:34:01,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:34:01,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:34:01,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:34:01,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:34:01,840 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:34:01,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:34:01,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:34:01,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:34:01,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:34:01,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:34:01,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:34:01,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:34:01,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:34:01,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:34:01,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:34:01,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:34:01,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:34:01,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:34:01,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:34:01,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:34:01,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:34:01,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:34:01,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:34:01,844 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:34:01,844 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:34:01,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:34:01,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:34:01,845 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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 [2021-11-13 17:34:02,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:34:02,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:34:02,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:34:02,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:34:02,134 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:34:02,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-13 17:34:02,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/data/8e9f01891/0fabe0d401f0497fb9a0bb26569e7aa6/FLAG251f458be [2021-11-13 17:34:03,124 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:34:03,126 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-13 17:34:03,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/data/8e9f01891/0fabe0d401f0497fb9a0bb26569e7aa6/FLAG251f458be [2021-11-13 17:34:03,541 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/data/8e9f01891/0fabe0d401f0497fb9a0bb26569e7aa6 [2021-11-13 17:34:03,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:34:03,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:34:03,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:34:03,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:34:03,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:34:03,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:34:03" (1/1) ... [2021-11-13 17:34:03,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722f4c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:03, skipping insertion in model container [2021-11-13 17:34:03,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:34:03" (1/1) ... [2021-11-13 17:34:03,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:34:03,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:34:04,997 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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-13 17:34:06,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:34:06,155 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:34:06,378 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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-13 17:34:06,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:34:06,831 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:34:06,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06 WrapperNode [2021-11-13 17:34:06,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:34:06,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:34:06,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:34:06,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:34:06,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (1/1) ... [2021-11-13 17:34:06,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (1/1) ... [2021-11-13 17:34:07,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:34:07,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:34:07,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:34:07,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:34:07,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (1/1) ... [2021-11-13 17:34:07,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (1/1) ... [2021-11-13 17:34:07,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (1/1) ... [2021-11-13 17:34:07,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (1/1) ... [2021-11-13 17:34:07,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (1/1) ... [2021-11-13 17:34:07,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (1/1) ... [2021-11-13 17:34:07,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (1/1) ... [2021-11-13 17:34:07,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:34:07,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:34:07,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:34:07,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:34:07,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (1/1) ... [2021-11-13 17:34:07,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:34:07,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:34:07,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:34:07,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:34:07,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2021-11-13 17:34:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2021-11-13 17:34:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pm_wakeup_card [2021-11-13 17:34:07,753 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pm_wakeup_card [2021-11-13 17:34:07,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:34:07,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:34:07,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:34:07,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:34:07,754 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-13 17:34:07,754 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-13 17:34:07,754 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_cmdrsp_buf [2021-11-13 17:34:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_cmdrsp_buf [2021-11-13 17:34:07,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:34:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:34:07,755 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2021-11-13 17:34:07,755 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2021-11-13 17:34:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2021-11-13 17:34:07,756 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2021-11-13 17:34:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 17:34:07,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 17:34:07,756 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-13 17:34:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-13 17:34:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_reg [2021-11-13 17:34:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_reg [2021-11-13 17:34:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_map_pci_memory [2021-11-13 17:34:07,757 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_map_pci_memory [2021-11-13 17:34:07,757 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg [2021-11-13 17:34:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg [2021-11-13 17:34:07,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:34:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:34:07,758 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 17:34:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 17:34:07,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:34:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:34:07,759 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:34:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:34:07,759 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-13 17:34:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-13 17:34:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 17:34:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 17:34:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_process_event_ready [2021-11-13 17:34:07,760 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_process_event_ready [2021-11-13 17:34:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:34:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:34:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 17:34:07,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 17:34:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-13 17:34:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 17:34:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 17:34:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_unmap_pci_memory [2021-11-13 17:34:07,762 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_unmap_pci_memory [2021-11-13 17:34:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:34:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:34:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_clean_pcie_ring_buf [2021-11-13 17:34:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_clean_pcie_ring_buf [2021-11-13 17:34:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_dev_wakeup_delay [2021-11-13 17:34:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_dev_wakeup_delay [2021-11-13 17:34:07,763 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_ok_to_access_hw [2021-11-13 17:34:07,763 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_ok_to_access_hw [2021-11-13 17:34:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 17:34:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 17:34:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure MWIFIEX_SKB_DMA_ADDR [2021-11-13 17:34:07,764 INFO L138 BoogieDeclarations]: Found implementation of procedure MWIFIEX_SKB_DMA_ADDR [2021-11-13 17:34:07,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:34:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 17:34:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 17:34:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 17:34:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 17:34:07,765 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_resume [2021-11-13 17:34:07,765 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_resume [2021-11-13 17:34:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_txbd_ring [2021-11-13 17:34:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_txbd_ring [2021-11-13 17:34:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:34:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_suspend [2021-11-13 17:34:07,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_suspend [2021-11-13 17:34:07,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:34:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 17:34:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 17:34:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:34:07,767 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:34:07,767 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_enable_host_int [2021-11-13 17:34:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_enable_host_int [2021-11-13 17:34:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_disable_host_int [2021-11-13 17:34:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_disable_host_int [2021-11-13 17:34:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_txbd_not_full [2021-11-13 17:34:07,768 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_txbd_not_full [2021-11-13 17:34:07,768 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-13 17:34:07,769 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-13 17:34:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_evtbd_ring [2021-11-13 17:34:07,769 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_evtbd_ring [2021-11-13 17:34:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:34:07,769 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:34:07,769 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-13 17:34:07,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-13 17:34:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 17:34:07,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 17:34:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:34:07,770 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 17:34:07,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 17:34:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-13 17:34:07,771 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-13 17:34:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-11-13 17:34:07,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-11-13 17:34:07,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:34:07,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:34:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:34:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 17:34:07,772 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 17:34:07,772 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_remove [2021-11-13 17:34:07,772 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_remove [2021-11-13 17:34:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure pci_request_region [2021-11-13 17:34:07,773 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_request_region [2021-11-13 17:34:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_rxbd_ring [2021-11-13 17:34:07,773 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_rxbd_ring [2021-11-13 17:34:07,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:34:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 17:34:07,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 17:34:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 17:34:07,774 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 17:34:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure MWIFIEX_SKB_PACB [2021-11-13 17:34:07,774 INFO L138 BoogieDeclarations]: Found implementation of procedure MWIFIEX_SKB_PACB [2021-11-13 17:34:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 17:34:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 17:34:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:34:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-13 17:34:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:34:07,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:34:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_complete [2021-11-13 17:34:07,776 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_complete [2021-11-13 17:34:07,776 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_txbd_empty [2021-11-13 17:34:07,776 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_txbd_empty [2021-11-13 17:34:09,640 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:34:41,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:34:41,597 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 17:34:41,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:34:41 BoogieIcfgContainer [2021-11-13 17:34:41,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:34:41,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:34:41,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:34:41,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:34:41,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:34:03" (1/3) ... [2021-11-13 17:34:41,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c783b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:34:41, skipping insertion in model container [2021-11-13 17:34:41,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:06" (2/3) ... [2021-11-13 17:34:41,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c783b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:34:41, skipping insertion in model container [2021-11-13 17:34:41,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:34:41" (3/3) ... [2021-11-13 17:34:41,612 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-13 17:34:41,617 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:34:41,618 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:34:41,675 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:34:41,682 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 17:34:41,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:34:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 1562 states, 1189 states have (on average 1.4137931034482758) internal successors, (1681), 1210 states have internal predecessors, (1681), 315 states have call successors, (315), 57 states have call predecessors, (315), 56 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2021-11-13 17:34:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-13 17:34:41,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:41,752 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 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 17:34:41,752 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:41,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:41,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1790507018, now seen corresponding path program 1 times [2021-11-13 17:34:41,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:41,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65372604] [2021-11-13 17:34:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:41,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:34:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:34:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:34:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 17:34:42,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:42,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65372604] [2021-11-13 17:34:42,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65372604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:42,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:34:42,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:34:42,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217957915] [2021-11-13 17:34:42,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:42,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:34:42,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:42,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:34:42,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:34:42,891 INFO L87 Difference]: Start difference. First operand has 1562 states, 1189 states have (on average 1.4137931034482758) internal successors, (1681), 1210 states have internal predecessors, (1681), 315 states have call successors, (315), 57 states have call predecessors, (315), 56 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 17:34:45,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:34:47,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:34:49,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:34:56,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:56,090 INFO L93 Difference]: Finished difference Result 4845 states and 7288 transitions. [2021-11-13 17:34:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:34:56,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 39 [2021-11-13 17:34:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:56,143 INFO L225 Difference]: With dead ends: 4845 [2021-11-13 17:34:56,143 INFO L226 Difference]: Without dead ends: 3260 [2021-11-13 17:34:56,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 17:34:56,164 INFO L933 BasicCegarLoop]: 2530 mSDtfsCounter, 2777 mSDsluCounter, 3268 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 776 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11848.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2976 SdHoareTripleChecker+Valid, 5798 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 77.12ms SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12705.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:56,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2976 Valid, 5798 Invalid, 1997 Unknown, 0 Unchecked, 77.12ms Time], IncrementalHoareTripleChecker [776 Valid, 1218 Invalid, 3 Unknown, 0 Unchecked, 12705.90ms Time] [2021-11-13 17:34:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-11-13 17:34:56,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3042. [2021-11-13 17:34:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 2325 states have (on average 1.4055913978494623) internal successors, (3268), 2349 states have internal predecessors, (3268), 606 states have call successors, (606), 111 states have call predecessors, (606), 110 states have return successors, (605), 605 states have call predecessors, (605), 605 states have call successors, (605) [2021-11-13 17:34:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 4479 transitions. [2021-11-13 17:34:56,450 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 4479 transitions. Word has length 39 [2021-11-13 17:34:56,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:56,451 INFO L470 AbstractCegarLoop]: Abstraction has 3042 states and 4479 transitions. [2021-11-13 17:34:56,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 17:34:56,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 4479 transitions. [2021-11-13 17:34:56,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-13 17:34:56,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:56,460 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:34:56,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:34:56,461 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1277499630, now seen corresponding path program 1 times [2021-11-13 17:34:56,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:56,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490006987] [2021-11-13 17:34:56,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:56,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:34:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:34:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:57,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:34:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:34:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 17:34:57,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:57,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490006987] [2021-11-13 17:34:57,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490006987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:57,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:34:57,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:34:57,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881363727] [2021-11-13 17:34:57,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:57,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:34:57,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:57,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:34:57,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:34:57,077 INFO L87 Difference]: Start difference. First operand 3042 states and 4479 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:34:59,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:01,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:07,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:11,881 INFO L93 Difference]: Finished difference Result 9539 states and 14216 transitions. [2021-11-13 17:35:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:35:11,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-11-13 17:35:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:11,940 INFO L225 Difference]: With dead ends: 9539 [2021-11-13 17:35:11,941 INFO L226 Difference]: Without dead ends: 6498 [2021-11-13 17:35:11,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:35:11,961 INFO L933 BasicCegarLoop]: 2631 mSDtfsCounter, 2780 mSDsluCounter, 8182 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 744 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13344.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 10813 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.06ms SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14168.67ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:11,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2980 Valid, 10813 Invalid, 2637 Unknown, 0 Unchecked, 64.06ms Time], IncrementalHoareTripleChecker [744 Valid, 1890 Invalid, 3 Unknown, 0 Unchecked, 14168.67ms Time] [2021-11-13 17:35:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2021-11-13 17:35:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 6092. [2021-11-13 17:35:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6092 states, 4657 states have (on average 1.4056259394459953) internal successors, (6546), 4707 states have internal predecessors, (6546), 1208 states have call successors, (1208), 221 states have call predecessors, (1208), 226 states have return successors, (1237), 1211 states have call predecessors, (1237), 1207 states have call successors, (1237) [2021-11-13 17:35:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 8991 transitions. [2021-11-13 17:35:12,288 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 8991 transitions. Word has length 49 [2021-11-13 17:35:12,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:12,289 INFO L470 AbstractCegarLoop]: Abstraction has 6092 states and 8991 transitions. [2021-11-13 17:35:12,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:35:12,290 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 8991 transitions. [2021-11-13 17:35:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-13 17:35:12,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:12,308 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 17:35:12,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:35:12,308 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:12,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:12,309 INFO L85 PathProgramCache]: Analyzing trace with hash 41662539, now seen corresponding path program 1 times [2021-11-13 17:35:12,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:35:12,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598011367] [2021-11-13 17:35:12,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:12,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:35:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:35:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:35:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:35:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:35:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:35:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:35:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 17:35:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 17:35:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 17:35:12,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:35:12,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598011367] [2021-11-13 17:35:12,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598011367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:12,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:12,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:35:12,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602268347] [2021-11-13 17:35:12,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:12,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:35:12,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:35:12,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:35:12,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:35:12,969 INFO L87 Difference]: Start difference. First operand 6092 states and 8991 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 17:35:15,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:17,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:23,124 INFO L93 Difference]: Finished difference Result 13999 states and 20777 transitions. [2021-11-13 17:35:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:35:23,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2021-11-13 17:35:23,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:23,190 INFO L225 Difference]: With dead ends: 13999 [2021-11-13 17:35:23,190 INFO L226 Difference]: Without dead ends: 7917 [2021-11-13 17:35:23,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:35:23,226 INFO L933 BasicCegarLoop]: 2215 mSDtfsCounter, 1720 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 1188 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9196.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 5255 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.62ms SdHoareTripleChecker+Time, 1188 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9834.91ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:23,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1767 Valid, 5255 Invalid, 2347 Unknown, 0 Unchecked, 30.62ms Time], IncrementalHoareTripleChecker [1188 Valid, 1157 Invalid, 2 Unknown, 0 Unchecked, 9834.91ms Time] [2021-11-13 17:35:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7917 states. [2021-11-13 17:35:23,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7917 to 7421. [2021-11-13 17:35:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7421 states, 5764 states have (on average 1.4191533657182511) internal successors, (8180), 5814 states have internal predecessors, (8180), 1361 states have call successors, (1361), 290 states have call predecessors, (1361), 295 states have return successors, (1390), 1364 states have call predecessors, (1390), 1360 states have call successors, (1390) [2021-11-13 17:35:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 10931 transitions. [2021-11-13 17:35:23,661 INFO L78 Accepts]: Start accepts. Automaton has 7421 states and 10931 transitions. Word has length 117 [2021-11-13 17:35:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:23,661 INFO L470 AbstractCegarLoop]: Abstraction has 7421 states and 10931 transitions. [2021-11-13 17:35:23,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 17:35:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 7421 states and 10931 transitions. [2021-11-13 17:35:23,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-13 17:35:23,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:23,681 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:23,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:35:23,681 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:23,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:23,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2139715759, now seen corresponding path program 1 times [2021-11-13 17:35:23,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:35:23,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945824156] [2021-11-13 17:35:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:23,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:35:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:35:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:24,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:35:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:24,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:35:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:35:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:35:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:35:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:35:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 17:35:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:35:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:35:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-13 17:35:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-13 17:35:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-13 17:35:25,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:35:25,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945824156] [2021-11-13 17:35:25,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945824156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:25,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:25,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:35:25,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751205541] [2021-11-13 17:35:25,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:25,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:35:25,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:35:25,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:35:25,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:35:25,409 INFO L87 Difference]: Start difference. First operand 7421 states and 10931 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:35:27,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:29,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:38,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:38,859 INFO L93 Difference]: Finished difference Result 15293 states and 22715 transitions. [2021-11-13 17:35:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:35:38,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 157 [2021-11-13 17:35:38,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:38,927 INFO L225 Difference]: With dead ends: 15293 [2021-11-13 17:35:38,927 INFO L226 Difference]: Without dead ends: 7889 [2021-11-13 17:35:38,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:35:38,962 INFO L933 BasicCegarLoop]: 2179 mSDtfsCounter, 603 mSDsluCounter, 8089 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 685 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12138.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 10268 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.94ms SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13029.74ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:38,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 10268 Invalid, 3103 Unknown, 0 Unchecked, 42.94ms Time], IncrementalHoareTripleChecker [685 Valid, 2416 Invalid, 2 Unknown, 0 Unchecked, 13029.74ms Time] [2021-11-13 17:35:38,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7889 states. [2021-11-13 17:35:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7889 to 7421. [2021-11-13 17:35:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7421 states, 5760 states have (on average 1.4180555555555556) internal successors, (8168), 5812 states have internal predecessors, (8168), 1361 states have call successors, (1361), 290 states have call predecessors, (1361), 299 states have return successors, (1398), 1366 states have call predecessors, (1398), 1360 states have call successors, (1398) [2021-11-13 17:35:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 10927 transitions. [2021-11-13 17:35:39,410 INFO L78 Accepts]: Start accepts. Automaton has 7421 states and 10927 transitions. Word has length 157 [2021-11-13 17:35:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:39,412 INFO L470 AbstractCegarLoop]: Abstraction has 7421 states and 10927 transitions. [2021-11-13 17:35:39,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:35:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 7421 states and 10927 transitions. [2021-11-13 17:35:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-13 17:35:39,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:39,436 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:39,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:35:39,436 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:39,437 INFO L85 PathProgramCache]: Analyzing trace with hash -55648936, now seen corresponding path program 1 times [2021-11-13 17:35:39,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:35:39,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454013988] [2021-11-13 17:35:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:39,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:35:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:40,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:35:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:40,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:35:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:40,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:35:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:40,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:35:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:35:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:35:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:40,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:35:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:40,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 17:35:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:35:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:41,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:35:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-13 17:35:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:35:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:41,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 17:35:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-13 17:35:41,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:35:41,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454013988] [2021-11-13 17:35:41,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454013988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:41,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:41,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:35:41,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552741676] [2021-11-13 17:35:41,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:41,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:35:41,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:35:41,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:35:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:35:41,262 INFO L87 Difference]: Start difference. First operand 7421 states and 10927 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 17:35:43,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:45,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:51,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:51,275 INFO L93 Difference]: Finished difference Result 15369 states and 22867 transitions. [2021-11-13 17:35:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:35:51,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2021-11-13 17:35:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:51,323 INFO L225 Difference]: With dead ends: 15369 [2021-11-13 17:35:51,323 INFO L226 Difference]: Without dead ends: 7965 [2021-11-13 17:35:51,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:35:51,351 INFO L933 BasicCegarLoop]: 2180 mSDtfsCounter, 909 mSDsluCounter, 6995 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 1026 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8909.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 9175 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 115.38ms SdHoareTripleChecker+Time, 1026 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9664.23ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:51,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 9175 Invalid, 2791 Unknown, 0 Unchecked, 115.38ms Time], IncrementalHoareTripleChecker [1026 Valid, 1763 Invalid, 2 Unknown, 0 Unchecked, 9664.23ms Time] [2021-11-13 17:35:51,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2021-11-13 17:35:51,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7453. [2021-11-13 17:35:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7453 states, 5784 states have (on average 1.4163208852005533) internal successors, (8192), 5836 states have internal predecessors, (8192), 1361 states have call successors, (1361), 290 states have call predecessors, (1361), 307 states have return successors, (1462), 1374 states have call predecessors, (1462), 1360 states have call successors, (1462) [2021-11-13 17:35:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7453 states to 7453 states and 11015 transitions. [2021-11-13 17:35:51,697 INFO L78 Accepts]: Start accepts. Automaton has 7453 states and 11015 transitions. Word has length 164 [2021-11-13 17:35:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:51,699 INFO L470 AbstractCegarLoop]: Abstraction has 7453 states and 11015 transitions. [2021-11-13 17:35:51,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 17:35:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7453 states and 11015 transitions. [2021-11-13 17:35:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-13 17:35:51,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:51,720 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:35:51,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:35:51,721 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:51,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:51,722 INFO L85 PathProgramCache]: Analyzing trace with hash -717777381, now seen corresponding path program 1 times [2021-11-13 17:35:51,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:35:51,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889241686] [2021-11-13 17:35:51,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:51,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:35:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:35:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:35:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:35:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:35:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:35:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:35:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:35:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 17:35:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:35:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:35:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:35:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:35:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-13 17:35:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-13 17:35:59,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:35:59,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889241686] [2021-11-13 17:35:59,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889241686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:59,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:59,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:35:59,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507358545] [2021-11-13 17:35:59,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:59,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:35:59,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:35:59,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:35:59,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:35:59,692 INFO L87 Difference]: Start difference. First operand 7453 states and 11015 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 17:36:01,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:03,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:06,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:09,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:25,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:25,503 INFO L93 Difference]: Finished difference Result 15790 states and 23451 transitions. [2021-11-13 17:36:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:36:25,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 166 [2021-11-13 17:36:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:25,544 INFO L225 Difference]: With dead ends: 15790 [2021-11-13 17:36:25,544 INFO L226 Difference]: Without dead ends: 8344 [2021-11-13 17:36:25,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:36:25,565 INFO L933 BasicCegarLoop]: 4240 mSDtfsCounter, 2770 mSDsluCounter, 13869 mSDsCounter, 0 mSdLazyCounter, 4473 mSolverCounterSat, 846 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23371.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2967 SdHoareTripleChecker+Valid, 18109 SdHoareTripleChecker+Invalid, 5323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.61ms SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 4473 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25205.08ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:25,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2967 Valid, 18109 Invalid, 5323 Unknown, 0 Unchecked, 67.61ms Time], IncrementalHoareTripleChecker [846 Valid, 4473 Invalid, 4 Unknown, 0 Unchecked, 25205.08ms Time] [2021-11-13 17:36:25,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8344 states. [2021-11-13 17:36:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8344 to 7492. [2021-11-13 17:36:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7492 states, 5814 states have (on average 1.41468868249054) internal successors, (8225), 5869 states have internal predecessors, (8225), 1367 states have call successors, (1367), 293 states have call predecessors, (1367), 310 states have return successors, (1468), 1377 states have call predecessors, (1468), 1366 states have call successors, (1468) [2021-11-13 17:36:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7492 states to 7492 states and 11060 transitions. [2021-11-13 17:36:25,963 INFO L78 Accepts]: Start accepts. Automaton has 7492 states and 11060 transitions. Word has length 166 [2021-11-13 17:36:25,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:25,964 INFO L470 AbstractCegarLoop]: Abstraction has 7492 states and 11060 transitions. [2021-11-13 17:36:25,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 17:36:25,964 INFO L276 IsEmpty]: Start isEmpty. Operand 7492 states and 11060 transitions. [2021-11-13 17:36:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-13 17:36:25,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:25,985 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:36:25,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:36:25,985 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash -123678410, now seen corresponding path program 1 times [2021-11-13 17:36:25,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:25,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682724998] [2021-11-13 17:36:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:25,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:36:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:36:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:36:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:36:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:36:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:36:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 17:36:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 17:36:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:36:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:36:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:36:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-13 17:36:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:39,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:40,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:40,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:36:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-13 17:36:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-13 17:36:40,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:40,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682724998] [2021-11-13 17:36:40,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682724998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:40,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:40,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-13 17:36:40,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176054859] [2021-11-13 17:36:40,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:40,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 17:36:40,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:40,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 17:36:40,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:36:40,603 INFO L87 Difference]: Start difference. First operand 7492 states and 11060 transitions. Second operand has 18 states, 17 states have (on average 6.529411764705882) internal successors, (111), 11 states have internal predecessors, (111), 3 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-13 17:36:42,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:45,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:58,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:08,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:08,367 INFO L93 Difference]: Finished difference Result 19805 states and 30193 transitions. [2021-11-13 17:37:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 17:37:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.529411764705882) internal successors, (111), 11 states have internal predecessors, (111), 3 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) Word has length 172 [2021-11-13 17:37:08,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:08,437 INFO L225 Difference]: With dead ends: 19805 [2021-11-13 17:37:08,437 INFO L226 Difference]: Without dead ends: 12330 [2021-11-13 17:37:08,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:37:08,465 INFO L933 BasicCegarLoop]: 3648 mSDtfsCounter, 1398 mSDsluCounter, 43521 mSDsCounter, 0 mSdLazyCounter, 6678 mSolverCounterSat, 350 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24515.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 47169 SdHoareTripleChecker+Invalid, 7031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 140.26ms SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 6678 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26754.72ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:08,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 47169 Invalid, 7031 Unknown, 0 Unchecked, 140.26ms Time], IncrementalHoareTripleChecker [350 Valid, 6678 Invalid, 3 Unknown, 0 Unchecked, 26754.72ms Time] [2021-11-13 17:37:08,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12330 states. [2021-11-13 17:37:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12330 to 7506. [2021-11-13 17:37:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7506 states, 5826 states have (on average 1.4131479574322006) internal successors, (8233), 5877 states have internal predecessors, (8233), 1367 states have call successors, (1367), 293 states have call predecessors, (1367), 312 states have return successors, (1478), 1383 states have call predecessors, (1478), 1366 states have call successors, (1478) [2021-11-13 17:37:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7506 states to 7506 states and 11078 transitions. [2021-11-13 17:37:09,035 INFO L78 Accepts]: Start accepts. Automaton has 7506 states and 11078 transitions. Word has length 172 [2021-11-13 17:37:09,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:09,036 INFO L470 AbstractCegarLoop]: Abstraction has 7506 states and 11078 transitions. [2021-11-13 17:37:09,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.529411764705882) internal successors, (111), 11 states have internal predecessors, (111), 3 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-13 17:37:09,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7506 states and 11078 transitions. [2021-11-13 17:37:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-13 17:37:09,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:09,061 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:09,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:37:09,061 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:09,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:09,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1247287038, now seen corresponding path program 1 times [2021-11-13 17:37:09,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:09,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261859915] [2021-11-13 17:37:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:09,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:37:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:37:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:37:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:37:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:37:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:37:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 17:37:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 17:37:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:37:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:37:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:37:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-13 17:37:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:37:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-13 17:37:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 17:37:10,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:10,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261859915] [2021-11-13 17:37:10,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261859915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:10,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:10,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:37:10,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791032774] [2021-11-13 17:37:10,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:10,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:37:10,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:37:10,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:37:10,779 INFO L87 Difference]: Start difference. First operand 7506 states and 11078 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 17:37:12,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:15,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:17,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:19,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:32,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:32,423 INFO L93 Difference]: Finished difference Result 19819 states and 30163 transitions. [2021-11-13 17:37:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:37:32,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 178 [2021-11-13 17:37:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:32,488 INFO L225 Difference]: With dead ends: 19819 [2021-11-13 17:37:32,488 INFO L226 Difference]: Without dead ends: 12330 [2021-11-13 17:37:32,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:37:32,518 INFO L933 BasicCegarLoop]: 3597 mSDtfsCounter, 1679 mSDsluCounter, 6049 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 718 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19609.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 9646 SdHoareTripleChecker+Invalid, 3225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.02ms SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21154.91ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:32,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1934 Valid, 9646 Invalid, 3225 Unknown, 0 Unchecked, 39.02ms Time], IncrementalHoareTripleChecker [718 Valid, 2503 Invalid, 4 Unknown, 0 Unchecked, 21154.91ms Time] [2021-11-13 17:37:32,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12330 states. [2021-11-13 17:37:32,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12330 to 7510. [2021-11-13 17:37:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7510 states, 5830 states have (on average 1.4128644939965695) internal successors, (8237), 5881 states have internal predecessors, (8237), 1367 states have call successors, (1367), 293 states have call predecessors, (1367), 312 states have return successors, (1478), 1383 states have call predecessors, (1478), 1366 states have call successors, (1478) [2021-11-13 17:37:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7510 states to 7510 states and 11082 transitions. [2021-11-13 17:37:33,019 INFO L78 Accepts]: Start accepts. Automaton has 7510 states and 11082 transitions. Word has length 178 [2021-11-13 17:37:33,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:33,020 INFO L470 AbstractCegarLoop]: Abstraction has 7510 states and 11082 transitions. [2021-11-13 17:37:33,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 17:37:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 7510 states and 11082 transitions. [2021-11-13 17:37:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-13 17:37:33,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:33,042 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:33,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:37:33,043 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:33,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:33,043 INFO L85 PathProgramCache]: Analyzing trace with hash -494582719, now seen corresponding path program 1 times [2021-11-13 17:37:33,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:33,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637551074] [2021-11-13 17:37:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:33,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:37:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:37:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:37:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:37:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:37:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:37:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 17:37:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 17:37:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:37:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:37:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:37:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-13 17:37:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:37:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-13 17:37:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-13 17:37:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-13 17:37:35,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:35,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637551074] [2021-11-13 17:37:35,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637551074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:35,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:35,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:37:35,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792497940] [2021-11-13 17:37:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:35,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:37:35,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:35,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:37:35,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:37:35,529 INFO L87 Difference]: Start difference. First operand 7510 states and 11082 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-13 17:37:37,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:40,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:44,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:48,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:56,841 INFO L93 Difference]: Finished difference Result 23909 states and 36931 transitions. [2021-11-13 17:37:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:37:56,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 182 [2021-11-13 17:37:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:56,924 INFO L225 Difference]: With dead ends: 23909 [2021-11-13 17:37:56,925 INFO L226 Difference]: Without dead ends: 16416 [2021-11-13 17:37:56,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:37:56,958 INFO L933 BasicCegarLoop]: 4785 mSDtfsCounter, 3141 mSDsluCounter, 5987 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 1384 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18964.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 10772 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.68ms SdHoareTripleChecker+Time, 1384 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20646.25ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:56,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3612 Valid, 10772 Invalid, 3360 Unknown, 0 Unchecked, 41.68ms Time], IncrementalHoareTripleChecker [1384 Valid, 1972 Invalid, 4 Unknown, 0 Unchecked, 20646.25ms Time] [2021-11-13 17:37:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16416 states. [2021-11-13 17:37:57,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16416 to 7518. [2021-11-13 17:37:57,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7518 states, 5838 states have (on average 1.4122987324426173) internal successors, (8245), 5889 states have internal predecessors, (8245), 1367 states have call successors, (1367), 293 states have call predecessors, (1367), 312 states have return successors, (1478), 1383 states have call predecessors, (1478), 1366 states have call successors, (1478) [2021-11-13 17:37:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7518 states to 7518 states and 11090 transitions. [2021-11-13 17:37:57,678 INFO L78 Accepts]: Start accepts. Automaton has 7518 states and 11090 transitions. Word has length 182 [2021-11-13 17:37:57,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:57,679 INFO L470 AbstractCegarLoop]: Abstraction has 7518 states and 11090 transitions. [2021-11-13 17:37:57,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 4 states have internal predecessors, (116), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-13 17:37:57,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7518 states and 11090 transitions. [2021-11-13 17:37:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 17:37:57,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:57,702 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:57,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:37:57,702 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:57,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1968730126, now seen corresponding path program 1 times [2021-11-13 17:37:57,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:57,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122494233] [2021-11-13 17:37:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:57,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:37:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:37:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:37:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:37:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 17:37:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 17:37:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 17:37:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 17:37:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-13 17:37:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:37:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:37:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-13 17:37:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:37:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:37:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-13 17:37:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 17:37:58,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:58,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122494233] [2021-11-13 17:37:58,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122494233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:58,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:58,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:37:58,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45215705] [2021-11-13 17:37:58,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:58,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:37:58,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:58,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:37:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:37:58,869 INFO L87 Difference]: Start difference. First operand 7518 states and 11090 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 17:38:00,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:03,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:05,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:07,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:23,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:23,720 INFO L93 Difference]: Finished difference Result 20071 states and 30899 transitions. [2021-11-13 17:38:23,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:38:23,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 183 [2021-11-13 17:38:23,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:23,789 INFO L225 Difference]: With dead ends: 20071 [2021-11-13 17:38:23,789 INFO L226 Difference]: Without dead ends: 12570 [2021-11-13 17:38:23,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:38:23,822 INFO L933 BasicCegarLoop]: 3601 mSDtfsCounter, 2082 mSDsluCounter, 12742 mSDsCounter, 0 mSdLazyCounter, 3447 mSolverCounterSat, 1079 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22163.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 16343 SdHoareTripleChecker+Invalid, 4530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.86ms SdHoareTripleChecker+Time, 1079 IncrementalHoareTripleChecker+Valid, 3447 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24211.89ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:23,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2373 Valid, 16343 Invalid, 4530 Unknown, 0 Unchecked, 58.86ms Time], IncrementalHoareTripleChecker [1079 Valid, 3447 Invalid, 4 Unknown, 0 Unchecked, 24211.89ms Time] [2021-11-13 17:38:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12570 states. [2021-11-13 17:38:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12570 to 7518. [2021-11-13 17:38:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7518 states, 5838 states have (on average 1.4116135662898253) internal successors, (8241), 5889 states have internal predecessors, (8241), 1367 states have call successors, (1367), 293 states have call predecessors, (1367), 312 states have return successors, (1478), 1383 states have call predecessors, (1478), 1366 states have call successors, (1478) [2021-11-13 17:38:24,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7518 states to 7518 states and 11086 transitions. [2021-11-13 17:38:24,607 INFO L78 Accepts]: Start accepts. Automaton has 7518 states and 11086 transitions. Word has length 183 [2021-11-13 17:38:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:24,608 INFO L470 AbstractCegarLoop]: Abstraction has 7518 states and 11086 transitions. [2021-11-13 17:38:24,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 17:38:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 7518 states and 11086 transitions. [2021-11-13 17:38:24,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-13 17:38:24,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:24,628 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:38:24,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:38:24,629 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:24,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1261467869, now seen corresponding path program 1 times [2021-11-13 17:38:24,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:24,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148103152] [2021-11-13 17:38:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:24,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:38:37,664 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:38:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:38:49,457 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:38:49,457 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:38:49,458 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 17:38:49,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:38:49,463 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:38:49,467 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:38:49,991 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:38:49,993 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:38:49,996 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:38:49,997 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:38:50,016 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:38:50,018 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:38:50,020 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:38:50,022 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:38:50,025 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:38:50,027 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:38:50,583 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 17:38:50,586 INFO L158 Benchmark]: Toolchain (without parser) took 287040.70ms. Allocated memory was 92.3MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 45.4MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2021-11-13 17:38:50,586 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory was 67.2MB in the beginning and 67.2MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:38:50,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3284.15ms. Allocated memory was 92.3MB in the beginning and 199.2MB in the end (delta: 107.0MB). Free memory was 45.4MB in the beginning and 102.3MB in the end (delta: -56.9MB). Peak memory consumption was 80.7MB. Max. memory is 16.1GB. [2021-11-13 17:38:50,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 432.41ms. Allocated memory is still 199.2MB. Free memory was 102.3MB in the beginning and 110.9MB in the end (delta: -8.7MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2021-11-13 17:38:50,588 INFO L158 Benchmark]: Boogie Preprocessor took 340.11ms. Allocated memory is still 199.2MB. Free memory was 110.9MB in the beginning and 68.0MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-11-13 17:38:50,589 INFO L158 Benchmark]: RCFGBuilder took 33995.32ms. Allocated memory was 199.2MB in the beginning and 1.1GB in the end (delta: 889.2MB). Free memory was 68.0MB in the beginning and 904.3MB in the end (delta: -836.3MB). Peak memory consumption was 641.1MB. Max. memory is 16.1GB. [2021-11-13 17:38:50,590 INFO L158 Benchmark]: TraceAbstraction took 248980.84ms. Allocated memory was 1.1GB in the beginning and 1.9GB in the end (delta: 805.3MB). Free memory was 904.3MB in the beginning and 1.6GB in the end (delta: -680.0MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2021-11-13 17:38:50,592 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory was 67.2MB in the beginning and 67.2MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3284.15ms. Allocated memory was 92.3MB in the beginning and 199.2MB in the end (delta: 107.0MB). Free memory was 45.4MB in the beginning and 102.3MB in the end (delta: -56.9MB). Peak memory consumption was 80.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 432.41ms. Allocated memory is still 199.2MB. Free memory was 102.3MB in the beginning and 110.9MB in the end (delta: -8.7MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 340.11ms. Allocated memory is still 199.2MB. Free memory was 110.9MB in the beginning and 68.0MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * RCFGBuilder took 33995.32ms. Allocated memory was 199.2MB in the beginning and 1.1GB in the end (delta: 889.2MB). Free memory was 68.0MB in the beginning and 904.3MB in the end (delta: -836.3MB). Peak memory consumption was 641.1MB. Max. memory is 16.1GB. * TraceAbstraction took 248980.84ms. Allocated memory was 1.1GB in the beginning and 1.9GB in the end (delta: 805.3MB). Free memory was 904.3MB in the beginning and 1.6GB in the end (delta: -680.0MB). Peak memory consumption was 1.2GB. 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.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#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 17:38:50,815 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-13 17:38:50,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/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 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:38:53,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:38:53,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:38:53,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:38:53,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:38:53,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:38:53,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:38:53,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:38:53,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:38:53,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:38:53,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:38:53,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:38:53,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:38:53,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:38:53,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:38:53,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:38:53,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:38:53,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:38:53,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:38:53,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:38:53,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:38:53,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:38:53,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:38:53,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:38:53,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:38:53,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:38:53,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:38:53,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:38:53,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:38:53,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:38:53,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:38:53,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:38:53,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:38:53,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:38:53,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:38:53,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:38:53,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:38:53,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:38:53,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:38:53,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:38:53,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:38:53,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-13 17:38:53,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:38:53,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:38:53,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:38:53,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:38:53,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:38:53,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:38:53,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:38:53,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:38:53,523 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:38:53,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:38:53,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:38:53,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:38:53,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:38:53,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:38:53,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:38:53,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:38:53,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:38:53,527 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:38:53,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:38:53,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:38:53,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:38:53,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:38:53,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:38:53,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:38:53,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:38:53,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:38:53,530 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:38:53,530 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:38:53,530 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:38:53,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:38:53,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:38:53,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:38:53,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:38:53,532 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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 138fe782a458987488cb714d4ee7d6a854842ca7c110303f565f817a9360a8e5 [2021-11-13 17:38:54,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:38:54,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:38:54,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:38:54,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:38:54,066 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:38:54,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-13 17:38:54,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/data/4cd2d0118/33d3b18b7d9348e894b4fb0177cec3f8/FLAG9bfed10ea [2021-11-13 17:38:55,263 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:38:55,264 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-13 17:38:55,331 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/data/4cd2d0118/33d3b18b7d9348e894b4fb0177cec3f8/FLAG9bfed10ea [2021-11-13 17:38:55,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/data/4cd2d0118/33d3b18b7d9348e894b4fb0177cec3f8 [2021-11-13 17:38:55,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:38:55,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:38:55,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:38:55,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:38:55,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:38:55,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:38:55" (1/1) ... [2021-11-13 17:38:55,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567e9b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:55, skipping insertion in model container [2021-11-13 17:38:55,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:38:55" (1/1) ... [2021-11-13 17:38:55,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:38:55,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:38:57,465 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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-13 17:38:58,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:38:58,714 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:38:58,990 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_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i[213580,213593] [2021-11-13 17:38:59,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:38:59,649 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:38:59,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59 WrapperNode [2021-11-13 17:38:59,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:38:59,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:38:59,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:38:59,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:38:59,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (1/1) ... [2021-11-13 17:38:59,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (1/1) ... [2021-11-13 17:39:00,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:39:00,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:39:00,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:39:00,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:39:00,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (1/1) ... [2021-11-13 17:39:00,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (1/1) ... [2021-11-13 17:39:00,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (1/1) ... [2021-11-13 17:39:00,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (1/1) ... [2021-11-13 17:39:00,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (1/1) ... [2021-11-13 17:39:00,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (1/1) ... [2021-11-13 17:39:00,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (1/1) ... [2021-11-13 17:39:00,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:39:00,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:39:00,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:39:00,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:39:00,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (1/1) ... [2021-11-13 17:39:00,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:39:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:39:00,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:39:00,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:39:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2021-11-13 17:39:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2021-11-13 17:39:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:39:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pm_wakeup_card [2021-11-13 17:39:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pm_wakeup_card [2021-11-13 17:39:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 17:39:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:39:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:39:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 17:39:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:39:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:39:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:39:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-13 17:39:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-13 17:39:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_cmdrsp_buf [2021-11-13 17:39:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_cmdrsp_buf [2021-11-13 17:39:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:39:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:39:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2021-11-13 17:39:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2021-11-13 17:39:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2021-11-13 17:39:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2021-11-13 17:39:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 17:39:00,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 17:39:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-13 17:39:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-13 17:39:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_reg [2021-11-13 17:39:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_reg [2021-11-13 17:39:00,741 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_map_pci_memory [2021-11-13 17:39:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_map_pci_memory [2021-11-13 17:39:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg [2021-11-13 17:39:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg [2021-11-13 17:39:00,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:39:00,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:39:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 17:39:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 17:39:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:39:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:39:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:39:00,744 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:39:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-13 17:39:00,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-13 17:39:00,744 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 17:39:00,745 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 17:39:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_process_event_ready [2021-11-13 17:39:00,745 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_process_event_ready [2021-11-13 17:39:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:39:00,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:39:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 17:39:00,746 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 17:39:00,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-13 17:39:00,747 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 17:39:00,747 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 17:39:00,747 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_unmap_pci_memory [2021-11-13 17:39:00,748 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_unmap_pci_memory [2021-11-13 17:39:00,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 17:39:00,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:39:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 17:39:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:39:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:39:00,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:39:00,751 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_clean_pcie_ring_buf [2021-11-13 17:39:00,751 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_clean_pcie_ring_buf [2021-11-13 17:39:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_dev_wakeup_delay [2021-11-13 17:39:00,752 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_dev_wakeup_delay [2021-11-13 17:39:00,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 17:39:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:39:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 17:39:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 17:39:00,753 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_ok_to_access_hw [2021-11-13 17:39:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_ok_to_access_hw [2021-11-13 17:39:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 17:39:00,754 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 17:39:00,754 INFO L130 BoogieDeclarations]: Found specification of procedure MWIFIEX_SKB_DMA_ADDR [2021-11-13 17:39:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure MWIFIEX_SKB_DMA_ADDR [2021-11-13 17:39:00,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 17:39:00,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 17:39:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 17:39:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 17:39:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_resume [2021-11-13 17:39:00,756 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_resume [2021-11-13 17:39:00,756 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_txbd_ring [2021-11-13 17:39:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_txbd_ring [2021-11-13 17:39:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_suspend [2021-11-13 17:39:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_suspend [2021-11-13 17:39:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 17:39:00,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 17:39:00,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:39:00,758 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:39:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_enable_host_int [2021-11-13 17:39:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_enable_host_int [2021-11-13 17:39:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_disable_host_int [2021-11-13 17:39:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_disable_host_int [2021-11-13 17:39:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_txbd_not_full [2021-11-13 17:39:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_txbd_not_full [2021-11-13 17:39:00,761 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-13 17:39:00,761 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-13 17:39:00,762 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_evtbd_ring [2021-11-13 17:39:00,762 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_evtbd_ring [2021-11-13 17:39:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:39:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:39:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-13 17:39:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-13 17:39:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 17:39:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 17:39:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 17:39:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 17:39:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-13 17:39:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-13 17:39:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2021-11-13 17:39:00,765 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2021-11-13 17:39:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 17:39:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 17:39:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 17:39:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 17:39:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:39:00,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:39:00,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:39:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 17:39:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 17:39:00,771 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_remove [2021-11-13 17:39:00,771 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_remove [2021-11-13 17:39:00,773 INFO L130 BoogieDeclarations]: Found specification of procedure pci_request_region [2021-11-13 17:39:00,774 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_request_region [2021-11-13 17:39:00,775 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_delete_rxbd_ring [2021-11-13 17:39:00,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_delete_rxbd_ring [2021-11-13 17:39:00,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:39:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 17:39:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 17:39:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 17:39:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 17:39:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 17:39:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 17:39:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 17:39:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure MWIFIEX_SKB_PACB [2021-11-13 17:39:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure MWIFIEX_SKB_PACB [2021-11-13 17:39:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 17:39:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 17:39:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 17:39:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-13 17:39:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:39:00,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:39:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_complete [2021-11-13 17:39:00,784 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_complete [2021-11-13 17:39:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_pcie_txbd_empty [2021-11-13 17:39:00,784 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_pcie_txbd_empty [2021-11-13 17:39:06,391 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:40:11,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:40:11,533 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 17:40:11,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:40:11 BoogieIcfgContainer [2021-11-13 17:40:11,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:40:11,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:40:11,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:40:11,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:40:11,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:38:55" (1/3) ... [2021-11-13 17:40:11,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466b49bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:40:11, skipping insertion in model container [2021-11-13 17:40:11,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:38:59" (2/3) ... [2021-11-13 17:40:11,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466b49bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:40:11, skipping insertion in model container [2021-11-13 17:40:11,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:40:11" (3/3) ... [2021-11-13 17:40:11,548 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_pcie.ko-entry_point.cil.out.i [2021-11-13 17:40:11,553 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:40:11,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:40:11,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:40:11,645 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 17:40:11,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:40:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 1562 states, 1189 states have (on average 1.4137931034482758) internal successors, (1681), 1210 states have internal predecessors, (1681), 315 states have call successors, (315), 57 states have call predecessors, (315), 56 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2021-11-13 17:40:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-13 17:40:11,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:40:11,740 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 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 17:40:11,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:40:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:40:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1790507018, now seen corresponding path program 1 times [2021-11-13 17:40:11,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:40:11,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441237797] [2021-11-13 17:40:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:40:11,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:40:11,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:40:11,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:40:11,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:40:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:29,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:40:29,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:40:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 17:40:29,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:40:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 17:40:29,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:40:29,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441237797] [2021-11-13 17:40:29,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441237797] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:40:29,838 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:40:29,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:40:29,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074280329] [2021-11-13 17:40:29,841 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:40:29,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:40:29,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:40:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:40:29,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:40:29,885 INFO L87 Difference]: Start difference. First operand has 1562 states, 1189 states have (on average 1.4137931034482758) internal successors, (1681), 1210 states have internal predecessors, (1681), 315 states have call successors, (315), 57 states have call predecessors, (315), 56 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 17:40:32,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:40:38,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:40:38,587 INFO L93 Difference]: Finished difference Result 6135 states and 9149 transitions. [2021-11-13 17:40:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:40:38,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 39 [2021-11-13 17:40:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:40:38,669 INFO L225 Difference]: With dead ends: 6135 [2021-11-13 17:40:38,670 INFO L226 Difference]: Without dead ends: 4539 [2021-11-13 17:40:38,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 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 17:40:38,703 INFO L933 BasicCegarLoop]: 2900 mSDtfsCounter, 4473 mSDsluCounter, 6022 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7635.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 8922 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.69ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8163.40ms IncrementalHoareTripleChecker+Time [2021-11-13 17:40:38,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 8922 Invalid, 633 Unknown, 0 Unchecked, 64.69ms Time], IncrementalHoareTripleChecker [6 Valid, 626 Invalid, 1 Unknown, 0 Unchecked, 8163.40ms Time] [2021-11-13 17:40:38,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2021-11-13 17:40:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 4539. [2021-11-13 17:40:39,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4539 states, 3469 states have (on average 1.4070337272989335) internal successors, (4881), 3505 states have internal predecessors, (4881), 904 states have call successors, (904), 166 states have call predecessors, (904), 165 states have return successors, (903), 903 states have call predecessors, (903), 903 states have call successors, (903) [2021-11-13 17:40:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4539 states to 4539 states and 6688 transitions. [2021-11-13 17:40:39,168 INFO L78 Accepts]: Start accepts. Automaton has 4539 states and 6688 transitions. Word has length 39 [2021-11-13 17:40:39,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:40:39,169 INFO L470 AbstractCegarLoop]: Abstraction has 4539 states and 6688 transitions. [2021-11-13 17:40:39,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 17:40:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4539 states and 6688 transitions. [2021-11-13 17:40:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-13 17:40:39,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:40:39,185 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:40:39,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:40:39,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:40:39,412 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:40:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:40:39,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1277499630, now seen corresponding path program 1 times [2021-11-13 17:40:39,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:40:39,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243948586] [2021-11-13 17:40:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:40:39,425 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:40:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:40:39,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:40:39,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:40:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:40:57,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 17:40:57,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:40:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 17:40:57,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:40:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 17:40:58,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:40:58,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243948586] [2021-11-13 17:40:58,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243948586] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:40:58,344 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:40:58,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-13 17:40:58,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876110938] [2021-11-13 17:40:58,344 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:40:58,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:40:58,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:40:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:40:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:40:58,347 INFO L87 Difference]: Start difference. First operand 4539 states and 6688 transitions. Second operand has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-13 17:41:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:41:02,533 INFO L93 Difference]: Finished difference Result 9986 states and 14825 transitions. [2021-11-13 17:41:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:41:02,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2021-11-13 17:41:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:41:02,592 INFO L225 Difference]: With dead ends: 9986 [2021-11-13 17:41:02,592 INFO L226 Difference]: Without dead ends: 5457 [2021-11-13 17:41:02,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:41:02,620 INFO L933 BasicCegarLoop]: 3477 mSDtfsCounter, 1089 mSDsluCounter, 16151 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3434.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 19628 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 3599.95ms IncrementalHoareTripleChecker+Time [2021-11-13 17:41:02,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 19628 Invalid, 617 Unknown, 0 Unchecked, 66.55ms Time], IncrementalHoareTripleChecker [0 Valid, 458 Invalid, 0 Unknown, 159 Unchecked, 3599.95ms Time] [2021-11-13 17:41:02,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-11-13 17:41:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 4539. [2021-11-13 17:41:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4539 states, 3469 states have (on average 1.406745459786682) internal successors, (4880), 3505 states have internal predecessors, (4880), 904 states have call successors, (904), 166 states have call predecessors, (904), 165 states have return successors, (903), 903 states have call predecessors, (903), 903 states have call successors, (903) [2021-11-13 17:41:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4539 states to 4539 states and 6687 transitions. [2021-11-13 17:41:03,052 INFO L78 Accepts]: Start accepts. Automaton has 4539 states and 6687 transitions. Word has length 49 [2021-11-13 17:41:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:41:03,053 INFO L470 AbstractCegarLoop]: Abstraction has 4539 states and 6687 transitions. [2021-11-13 17:41:03,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-13 17:41:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4539 states and 6687 transitions. [2021-11-13 17:41:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-13 17:41:03,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:41:03,060 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:41:03,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:41:03,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:41:03,274 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:41:03,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:41:03,275 INFO L85 PathProgramCache]: Analyzing trace with hash 266382380, now seen corresponding path program 1 times [2021-11-13 17:41:03,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:41:03,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260739183] [2021-11-13 17:41:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:41:03,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:41:03,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:41:03,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:41:03,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:41:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:20,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:41:20,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:41:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 17:41:21,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:41:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 17:41:21,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:41:21,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260739183] [2021-11-13 17:41:21,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260739183] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:41:21,759 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:41:21,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 17:41:21,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022873513] [2021-11-13 17:41:21,759 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:41:21,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:41:21,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:41:21,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:41:21,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:41:21,761 INFO L87 Difference]: Start difference. First operand 4539 states and 6687 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:41:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:41:23,049 INFO L93 Difference]: Finished difference Result 13594 states and 20069 transitions. [2021-11-13 17:41:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:41:23,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2021-11-13 17:41:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:41:23,150 INFO L225 Difference]: With dead ends: 13594 [2021-11-13 17:41:23,151 INFO L226 Difference]: Without dead ends: 9056 [2021-11-13 17:41:23,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:41:23,190 INFO L933 BasicCegarLoop]: 2674 mSDtfsCounter, 2241 mSDsluCounter, 10280 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 632.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2241 SdHoareTripleChecker+Valid, 12954 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 754.41ms IncrementalHoareTripleChecker+Time [2021-11-13 17:41:23,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2241 Valid, 12954 Invalid, 28 Unknown, 0 Unchecked, 39.03ms Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 754.41ms Time] [2021-11-13 17:41:23,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9056 states. [2021-11-13 17:41:23,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9056 to 9056. [2021-11-13 17:41:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9056 states, 6921 states have (on average 1.406877618841208) internal successors, (9737), 6993 states have internal predecessors, (9737), 1804 states have call successors, (1804), 331 states have call predecessors, (1804), 330 states have return successors, (1821), 1803 states have call predecessors, (1821), 1803 states have call successors, (1821) [2021-11-13 17:41:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9056 states to 9056 states and 13362 transitions. [2021-11-13 17:41:23,961 INFO L78 Accepts]: Start accepts. Automaton has 9056 states and 13362 transitions. Word has length 49 [2021-11-13 17:41:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:41:23,962 INFO L470 AbstractCegarLoop]: Abstraction has 9056 states and 13362 transitions. [2021-11-13 17:41:23,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 17:41:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 9056 states and 13362 transitions. [2021-11-13 17:41:23,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-13 17:41:23,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:41:23,987 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-11-13 17:41:24,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:41:24,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:41:24,200 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:41:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:41:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash -969454711, now seen corresponding path program 1 times [2021-11-13 17:41:24,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:41:24,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284026120] [2021-11-13 17:41:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:41:24,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:41:24,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:41:24,215 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:41:24,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:41:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:41:45,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 2285 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:41:45,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:41:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 17:41:45,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:41:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 17:41:46,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:41:46,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284026120] [2021-11-13 17:41:46,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284026120] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:41:46,504 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:41:46,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:41:46,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143702319] [2021-11-13 17:41:46,505 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:41:46,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:41:46,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:41:46,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:41:46,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:41:46,507 INFO L87 Difference]: Start difference. First operand 9056 states and 13362 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 17:41:48,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:41:48,194 INFO L93 Difference]: Finished difference Result 20089 states and 29613 transitions. [2021-11-13 17:41:48,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:41:48,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 117 [2021-11-13 17:41:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:41:48,305 INFO L225 Difference]: With dead ends: 20089 [2021-11-13 17:41:48,306 INFO L226 Difference]: Without dead ends: 11043 [2021-11-13 17:41:48,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:41:48,355 INFO L933 BasicCegarLoop]: 2326 mSDtfsCounter, 519 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1007.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.55ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1167.48ms IncrementalHoareTripleChecker+Time [2021-11-13 17:41:48,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 4536 Invalid, 50 Unknown, 0 Unchecked, 12.55ms Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 1167.48ms Time] [2021-11-13 17:41:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11043 states. [2021-11-13 17:41:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11043 to 11031. [2021-11-13 17:41:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11031 states, 8566 states have (on average 1.4203829091758113) internal successors, (12167), 8638 states have internal predecessors, (12167), 2031 states have call successors, (2031), 434 states have call predecessors, (2031), 433 states have return successors, (2048), 2030 states have call predecessors, (2048), 2030 states have call successors, (2048) [2021-11-13 17:41:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11031 states to 11031 states and 16246 transitions. [2021-11-13 17:41:48,979 INFO L78 Accepts]: Start accepts. Automaton has 11031 states and 16246 transitions. Word has length 117 [2021-11-13 17:41:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:41:48,981 INFO L470 AbstractCegarLoop]: Abstraction has 11031 states and 16246 transitions. [2021-11-13 17:41:48,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 17:41:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 11031 states and 16246 transitions. [2021-11-13 17:41:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-13 17:41:49,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:41:49,020 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:41:49,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:41:49,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:41:49,246 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:41:49,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:41:49,247 INFO L85 PathProgramCache]: Analyzing trace with hash 104842639, now seen corresponding path program 1 times [2021-11-13 17:41:49,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:41:49,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470735843] [2021-11-13 17:41:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:41:49,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:41:49,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:41:49,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:41:49,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:42:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:10,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:42:10,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:11,133 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-13 17:42:11,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-13 17:42:11,853 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:11,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470735843] [2021-11-13 17:42:11,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470735843] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:42:11,853 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:42:11,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 17:42:11,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270142391] [2021-11-13 17:42:11,854 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:11,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:42:11,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:11,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:42:11,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:42:11,855 INFO L87 Difference]: Start difference. First operand 11031 states and 16246 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:42:14,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:42:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:16,224 INFO L93 Difference]: Finished difference Result 22459 states and 33047 transitions. [2021-11-13 17:42:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:42:16,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 157 [2021-11-13 17:42:16,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:16,285 INFO L225 Difference]: With dead ends: 22459 [2021-11-13 17:42:16,286 INFO L226 Difference]: Without dead ends: 11435 [2021-11-13 17:42:16,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:42:16,334 INFO L933 BasicCegarLoop]: 4490 mSDtfsCounter, 2244 mSDsluCounter, 11238 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3441.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 15728 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.95ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3626.81ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:16,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2244 Valid, 15728 Invalid, 28 Unknown, 0 Unchecked, 32.95ms Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 3626.81ms Time] [2021-11-13 17:42:16,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11435 states. [2021-11-13 17:42:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11435 to 11070. [2021-11-13 17:42:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11070 states, 8596 states have (on average 1.418915774778967) internal successors, (12197), 8671 states have internal predecessors, (12197), 2037 states have call successors, (2037), 437 states have call predecessors, (2037), 436 states have return successors, (2054), 2033 states have call predecessors, (2054), 2036 states have call successors, (2054) [2021-11-13 17:42:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11070 states to 11070 states and 16288 transitions. [2021-11-13 17:42:16,957 INFO L78 Accepts]: Start accepts. Automaton has 11070 states and 16288 transitions. Word has length 157 [2021-11-13 17:42:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:16,957 INFO L470 AbstractCegarLoop]: Abstraction has 11070 states and 16288 transitions. [2021-11-13 17:42:16,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 17:42:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 11070 states and 16288 transitions. [2021-11-13 17:42:16,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-13 17:42:16,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:16,990 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:17,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:17,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:17,214 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:17,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:17,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1933743724, now seen corresponding path program 1 times [2021-11-13 17:42:17,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:17,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220726540] [2021-11-13 17:42:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:17,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:17,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:17,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:17,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:42:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:42:36,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 17:42:36,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:42:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-13 17:42:37,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:42:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-13 17:42:39,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:42:39,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220726540] [2021-11-13 17:42:39,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220726540] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 17:42:39,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:42:39,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-13 17:42:39,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935043980] [2021-11-13 17:42:39,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:42:39,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:42:39,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:42:39,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:42:39,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:42:39,037 INFO L87 Difference]: Start difference. First operand 11070 states and 16288 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-13 17:42:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:42:42,670 INFO L93 Difference]: Finished difference Result 22281 states and 32814 transitions. [2021-11-13 17:42:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:42:42,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 163 [2021-11-13 17:42:42,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:42:42,732 INFO L225 Difference]: With dead ends: 22281 [2021-11-13 17:42:42,732 INFO L226 Difference]: Without dead ends: 11228 [2021-11-13 17:42:42,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:42:42,774 INFO L933 BasicCegarLoop]: 2468 mSDtfsCounter, 1080 mSDsluCounter, 8560 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2928.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 11028 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3095.87ms IncrementalHoareTripleChecker+Time [2021-11-13 17:42:42,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1289 Valid, 11028 Invalid, 326 Unknown, 0 Unchecked, 26.80ms Time], IncrementalHoareTripleChecker [0 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 3095.87ms Time] [2021-11-13 17:42:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11228 states. [2021-11-13 17:42:43,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11228 to 11070. [2021-11-13 17:42:43,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11070 states, 8596 states have (on average 1.4184504420660773) internal successors, (12193), 8671 states have internal predecessors, (12193), 2037 states have call successors, (2037), 437 states have call predecessors, (2037), 436 states have return successors, (2054), 2033 states have call predecessors, (2054), 2036 states have call successors, (2054) [2021-11-13 17:42:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11070 states to 11070 states and 16284 transitions. [2021-11-13 17:42:43,422 INFO L78 Accepts]: Start accepts. Automaton has 11070 states and 16284 transitions. Word has length 163 [2021-11-13 17:42:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:42:43,423 INFO L470 AbstractCegarLoop]: Abstraction has 11070 states and 16284 transitions. [2021-11-13 17:42:43,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-13 17:42:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 11070 states and 16284 transitions. [2021-11-13 17:42:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-13 17:42:43,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:42:43,456 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:42:43,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:42:43,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:42:43,682 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:42:43,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:42:43,683 INFO L85 PathProgramCache]: Analyzing trace with hash 639220886, now seen corresponding path program 1 times [2021-11-13 17:42:43,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:42:43,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021800612] [2021-11-13 17:42:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:42:43,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:42:43,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:42:43,696 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:42:43,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:43:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:05,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 17:43:05,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:43:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-13 17:43:05,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:43:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-13 17:43:06,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:43:06,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021800612] [2021-11-13 17:43:06,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021800612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:43:06,958 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:43:06,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-13 17:43:06,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378233079] [2021-11-13 17:43:06,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:43:06,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:43:06,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:43:06,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:43:06,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:43:06,959 INFO L87 Difference]: Start difference. First operand 11070 states and 16284 transitions. Second operand has 8 states, 6 states have (on average 22.0) internal successors, (132), 7 states have internal predecessors, (132), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 17:43:11,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:43:11,209 INFO L93 Difference]: Finished difference Result 28179 states and 42236 transitions. [2021-11-13 17:43:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:43:11,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 22.0) internal successors, (132), 7 states have internal predecessors, (132), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 163 [2021-11-13 17:43:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:43:11,315 INFO L225 Difference]: With dead ends: 28179 [2021-11-13 17:43:11,315 INFO L226 Difference]: Without dead ends: 17126 [2021-11-13 17:43:11,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 317 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:43:11,364 INFO L933 BasicCegarLoop]: 3534 mSDtfsCounter, 1085 mSDsluCounter, 19757 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3448.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 23291 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 3642.41ms IncrementalHoareTripleChecker+Time [2021-11-13 17:43:11,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 23291 Invalid, 849 Unknown, 0 Unchecked, 37.85ms Time], IncrementalHoareTripleChecker [0 Valid, 653 Invalid, 0 Unknown, 196 Unchecked, 3642.41ms Time] [2021-11-13 17:43:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17126 states. [2021-11-13 17:43:12,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17126 to 11070. [2021-11-13 17:43:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11070 states, 8596 states have (on average 1.4177524429967427) internal successors, (12187), 8671 states have internal predecessors, (12187), 2037 states have call successors, (2037), 437 states have call predecessors, (2037), 436 states have return successors, (2054), 2033 states have call predecessors, (2054), 2036 states have call successors, (2054) [2021-11-13 17:43:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11070 states to 11070 states and 16278 transitions. [2021-11-13 17:43:12,337 INFO L78 Accepts]: Start accepts. Automaton has 11070 states and 16278 transitions. Word has length 163 [2021-11-13 17:43:12,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:43:12,338 INFO L470 AbstractCegarLoop]: Abstraction has 11070 states and 16278 transitions. [2021-11-13 17:43:12,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 22.0) internal successors, (132), 7 states have internal predecessors, (132), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 17:43:12,338 INFO L276 IsEmpty]: Start isEmpty. Operand 11070 states and 16278 transitions. [2021-11-13 17:43:12,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-13 17:43:12,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:43:12,371 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:43:12,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:43:12,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:43:12,594 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:43:12,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:43:12,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1694171752, now seen corresponding path program 1 times [2021-11-13 17:43:12,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:43:12,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449688855] [2021-11-13 17:43:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:43:12,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:43:12,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:43:12,611 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:43:12,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:43:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:34,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:43:34,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:43:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-13 17:43:35,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:43:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 17:43:36,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:43:36,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449688855] [2021-11-13 17:43:36,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449688855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:43:36,016 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:43:36,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 17:43:36,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275760814] [2021-11-13 17:43:36,017 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:43:36,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:43:36,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:43:36,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:43:36,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:43:36,018 INFO L87 Difference]: Start difference. First operand 11070 states and 16278 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 6 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 17:43:36,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:43:36,554 INFO L93 Difference]: Finished difference Result 22279 states and 32889 transitions. [2021-11-13 17:43:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:43:36,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 6 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) Word has length 163 [2021-11-13 17:43:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:43:36,599 INFO L225 Difference]: With dead ends: 22279 [2021-11-13 17:43:36,599 INFO L226 Difference]: Without dead ends: 11226 [2021-11-13 17:43:36,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:43:36,633 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 17 mSDsluCounter, 6802 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 9071 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.19ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.14ms IncrementalHoareTripleChecker+Time [2021-11-13 17:43:36,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 9071 Invalid, 16 Unknown, 0 Unchecked, 11.19ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 80.14ms Time] [2021-11-13 17:43:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11226 states. [2021-11-13 17:43:37,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11226 to 11118. [2021-11-13 17:43:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11118 states, 8632 states have (on average 1.4160101946246524) internal successors, (12223), 8707 states have internal predecessors, (12223), 2037 states have call successors, (2037), 437 states have call predecessors, (2037), 448 states have return successors, (2150), 2045 states have call predecessors, (2150), 2036 states have call successors, (2150) [2021-11-13 17:43:37,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11118 states to 11118 states and 16410 transitions. [2021-11-13 17:43:37,216 INFO L78 Accepts]: Start accepts. Automaton has 11118 states and 16410 transitions. Word has length 163 [2021-11-13 17:43:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:43:37,217 INFO L470 AbstractCegarLoop]: Abstraction has 11118 states and 16410 transitions. [2021-11-13 17:43:37,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 6 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 17:43:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11118 states and 16410 transitions. [2021-11-13 17:43:37,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-13 17:43:37,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:43:37,267 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:43:37,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:43:37,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:43:37,486 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:43:37,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:43:37,487 INFO L85 PathProgramCache]: Analyzing trace with hash -320678795, now seen corresponding path program 1 times [2021-11-13 17:43:37,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:43:37,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647267988] [2021-11-13 17:43:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:43:37,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:43:37,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:43:37,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:43:37,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:43:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:43:57,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 2416 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:43:57,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:43:58,563 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-13 17:43:58,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:43:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-13 17:43:59,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:43:59,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647267988] [2021-11-13 17:43:59,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647267988] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:43:59,614 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:43:59,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 17:43:59,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102553033] [2021-11-13 17:43:59,614 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:43:59,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:43:59,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:43:59,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:43:59,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:43:59,616 INFO L87 Difference]: Start difference. First operand 11118 states and 16410 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 17:43:59,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:43:59,980 INFO L93 Difference]: Finished difference Result 22257 states and 32907 transitions. [2021-11-13 17:43:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:43:59,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2021-11-13 17:43:59,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:44:00,023 INFO L225 Difference]: With dead ends: 22257 [2021-11-13 17:44:00,024 INFO L226 Difference]: Without dead ends: 11156 [2021-11-13 17:44:00,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:44:00,066 INFO L933 BasicCegarLoop]: 2267 mSDtfsCounter, 2 mSDsluCounter, 6796 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9063 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.69ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.18ms IncrementalHoareTripleChecker+Time [2021-11-13 17:44:00,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 9063 Invalid, 12 Unknown, 0 Unchecked, 9.69ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 59.18ms Time] [2021-11-13 17:44:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11156 states. [2021-11-13 17:44:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11156 to 11148. [2021-11-13 17:44:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11148 states, 8653 states have (on average 1.4150005778342771) internal successors, (12244), 8731 states have internal predecessors, (12244), 2037 states have call successors, (2037), 437 states have call predecessors, (2037), 457 states have return successors, (2167), 2051 states have call predecessors, (2167), 2036 states have call successors, (2167) [2021-11-13 17:44:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11148 states to 11148 states and 16448 transitions. [2021-11-13 17:44:00,794 INFO L78 Accepts]: Start accepts. Automaton has 11148 states and 16448 transitions. Word has length 165 [2021-11-13 17:44:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:44:00,795 INFO L470 AbstractCegarLoop]: Abstraction has 11148 states and 16448 transitions. [2021-11-13 17:44:00,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 17:44:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 11148 states and 16448 transitions. [2021-11-13 17:44:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-13 17:44:00,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:44:00,826 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:44:00,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:44:01,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:44:01,050 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:44:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:44:01,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1424768948, now seen corresponding path program 1 times [2021-11-13 17:44:01,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:44:01,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502583358] [2021-11-13 17:44:01,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:44:01,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:44:01,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:44:01,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:44:01,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:44:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:23,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 17:44:23,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:44:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-13 17:44:24,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:44:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-13 17:44:29,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:44:29,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502583358] [2021-11-13 17:44:29,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502583358] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:44:29,803 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:44:29,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-13 17:44:29,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246853637] [2021-11-13 17:44:29,804 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:44:29,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 17:44:29,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:44:29,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 17:44:29,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-13 17:44:29,806 INFO L87 Difference]: Start difference. First operand 11148 states and 16448 transitions. Second operand has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 16 states have internal predecessors, (129), 4 states have call successors, (20), 2 states have call predecessors, (20), 8 states have return successors, (22), 10 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-13 17:44:35,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:44:35,399 INFO L93 Difference]: Finished difference Result 34879 states and 53269 transitions. [2021-11-13 17:44:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 17:44:35,400 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 16 states have internal predecessors, (129), 4 states have call successors, (20), 2 states have call predecessors, (20), 8 states have return successors, (22), 10 states have call predecessors, (22), 4 states have call successors, (22) Word has length 172 [2021-11-13 17:44:35,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:44:35,477 INFO L225 Difference]: With dead ends: 34879 [2021-11-13 17:44:35,477 INFO L226 Difference]: Without dead ends: 23748 [2021-11-13 17:44:35,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-11-13 17:44:35,529 INFO L933 BasicCegarLoop]: 3987 mSDtfsCounter, 3140 mSDsluCounter, 51259 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3659.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 55246 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.33ms SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4067.95ms IncrementalHoareTripleChecker+Time [2021-11-13 17:44:35,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3560 Valid, 55246 Invalid, 623 Unknown, 0 Unchecked, 79.33ms Time], IncrementalHoareTripleChecker [214 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 4067.95ms Time] [2021-11-13 17:44:35,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23748 states. [2021-11-13 17:44:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23748 to 11184. [2021-11-13 17:44:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11184 states, 8680 states have (on average 1.4130184331797235) internal successors, (12265), 8755 states have internal predecessors, (12265), 2037 states have call successors, (2037), 437 states have call predecessors, (2037), 466 states have return successors, (2200), 2063 states have call predecessors, (2200), 2036 states have call successors, (2200) [2021-11-13 17:44:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11184 states to 11184 states and 16502 transitions. [2021-11-13 17:44:36,687 INFO L78 Accepts]: Start accepts. Automaton has 11184 states and 16502 transitions. Word has length 172 [2021-11-13 17:44:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:44:36,688 INFO L470 AbstractCegarLoop]: Abstraction has 11184 states and 16502 transitions. [2021-11-13 17:44:36,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 16 states have internal predecessors, (129), 4 states have call successors, (20), 2 states have call predecessors, (20), 8 states have return successors, (22), 10 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-13 17:44:36,688 INFO L276 IsEmpty]: Start isEmpty. Operand 11184 states and 16502 transitions. [2021-11-13 17:44:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-13 17:44:36,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:44:36,708 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:44:36,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:44:36,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:44:36,922 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:44:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:44:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1685717248, now seen corresponding path program 1 times [2021-11-13 17:44:36,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:44:36,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588222902] [2021-11-13 17:44:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:44:36,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:44:36,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:44:36,935 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:44:36,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:44:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:44:58,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:44:58,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:44:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 17:44:58,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:44:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 17:44:59,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:44:59,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588222902] [2021-11-13 17:44:59,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588222902] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:44:59,385 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:44:59,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:44:59,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615873600] [2021-11-13 17:44:59,386 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:44:59,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:44:59,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:44:59,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:44:59,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:44:59,388 INFO L87 Difference]: Start difference. First operand 11184 states and 16502 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 17:45:02,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:02,033 INFO L93 Difference]: Finished difference Result 35297 states and 53835 transitions. [2021-11-13 17:45:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:45:02,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 178 [2021-11-13 17:45:02,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:02,136 INFO L225 Difference]: With dead ends: 35297 [2021-11-13 17:45:02,136 INFO L226 Difference]: Without dead ends: 24130 [2021-11-13 17:45:02,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:45:02,193 INFO L933 BasicCegarLoop]: 3881 mSDtfsCounter, 2150 mSDsluCounter, 5915 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1527.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2564 SdHoareTripleChecker+Valid, 9796 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.63ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1666.19ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:02,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2564 Valid, 9796 Invalid, 220 Unknown, 0 Unchecked, 16.63ms Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 1666.19ms Time] [2021-11-13 17:45:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24130 states. [2021-11-13 17:45:03,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24130 to 11238. [2021-11-13 17:45:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11238 states, 8722 states have (on average 1.4124054116028433) internal successors, (12319), 8797 states have internal predecessors, (12319), 2049 states have call successors, (2049), 437 states have call predecessors, (2049), 466 states have return successors, (2212), 2075 states have call predecessors, (2212), 2048 states have call successors, (2212) [2021-11-13 17:45:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11238 states to 11238 states and 16580 transitions. [2021-11-13 17:45:03,200 INFO L78 Accepts]: Start accepts. Automaton has 11238 states and 16580 transitions. Word has length 178 [2021-11-13 17:45:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:03,201 INFO L470 AbstractCegarLoop]: Abstraction has 11238 states and 16580 transitions. [2021-11-13 17:45:03,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 17:45:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand 11238 states and 16580 transitions. [2021-11-13 17:45:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-13 17:45:03,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:03,222 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:03,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:03,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:45:03,446 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:45:03,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash 711929151, now seen corresponding path program 1 times [2021-11-13 17:45:03,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:45:03,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12287751] [2021-11-13 17:45:03,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:03,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:45:03,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:45:03,455 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:45:03,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:45:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:24,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 2464 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 17:45:24,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:45:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-13 17:45:25,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:45:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-13 17:45:26,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:45:26,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12287751] [2021-11-13 17:45:26,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12287751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:45:26,163 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:45:26,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-13 17:45:26,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428879437] [2021-11-13 17:45:26,164 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:45:26,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:45:26,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:45:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:45:26,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:45:26,166 INFO L87 Difference]: Start difference. First operand 11238 states and 16580 transitions. Second operand has 8 states, 6 states have (on average 20.666666666666668) internal successors, (124), 7 states have internal predecessors, (124), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-13 17:45:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:45:30,083 INFO L93 Difference]: Finished difference Result 28527 states and 42920 transitions. [2021-11-13 17:45:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:45:30,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 20.666666666666668) internal successors, (124), 7 states have internal predecessors, (124), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 182 [2021-11-13 17:45:30,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:45:30,159 INFO L225 Difference]: With dead ends: 28527 [2021-11-13 17:45:30,159 INFO L226 Difference]: Without dead ends: 17306 [2021-11-13 17:45:30,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 355 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:45:30,192 INFO L933 BasicCegarLoop]: 3536 mSDtfsCounter, 1005 mSDsluCounter, 16335 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2886.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 19871 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.48ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 3056.95ms IncrementalHoareTripleChecker+Time [2021-11-13 17:45:30,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 19871 Invalid, 752 Unknown, 0 Unchecked, 28.48ms Time], IncrementalHoareTripleChecker [1 Valid, 555 Invalid, 0 Unknown, 196 Unchecked, 3056.95ms Time] [2021-11-13 17:45:30,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17306 states. [2021-11-13 17:45:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17306 to 11238. [2021-11-13 17:45:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11238 states, 8722 states have (on average 1.411717495987159) internal successors, (12313), 8797 states have internal predecessors, (12313), 2049 states have call successors, (2049), 437 states have call predecessors, (2049), 466 states have return successors, (2212), 2075 states have call predecessors, (2212), 2048 states have call successors, (2212) [2021-11-13 17:45:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11238 states to 11238 states and 16574 transitions. [2021-11-13 17:45:31,207 INFO L78 Accepts]: Start accepts. Automaton has 11238 states and 16574 transitions. Word has length 182 [2021-11-13 17:45:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:45:31,207 INFO L470 AbstractCegarLoop]: Abstraction has 11238 states and 16574 transitions. [2021-11-13 17:45:31,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 20.666666666666668) internal successors, (124), 7 states have internal predecessors, (124), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-13 17:45:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 11238 states and 16574 transitions. [2021-11-13 17:45:31,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-13 17:45:31,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:45:31,230 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:45:31,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:45:31,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:45:31,454 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:45:31,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:45:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash 773968765, now seen corresponding path program 1 times [2021-11-13 17:45:31,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:45:31,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119923765] [2021-11-13 17:45:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:45:31,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:45:31,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:45:31,469 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:45:31,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e677b7ba-31b7-4ca5-9d9c-9c20a46804cd/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 17:45:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:45:59,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 2464 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:45:59,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-13 17:46:00,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-13 17:46:00,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:00,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119923765] [2021-11-13 17:46:00,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119923765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:00,903 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:00,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:46:00,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976171347] [2021-11-13 17:46:00,903 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:00,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:46:00,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:00,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:46:00,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:46:00,905 INFO L87 Difference]: Start difference. First operand 11238 states and 16574 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 4 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23)