./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_sdio.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_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_sdio.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_4c060822-24ed-46eb-b1da-41026b30010c/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 4e928bce7a5eba940349fe986fce1ee6d952316584823caa32f480aa4c9f0c38 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:08:14,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:08:14,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:08:14,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:08:14,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:08:14,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:08:14,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:08:14,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:08:14,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:08:14,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:08:14,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:08:14,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:08:14,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:08:14,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:08:14,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:08:14,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:08:14,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:08:14,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:08:14,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:08:14,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:08:14,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:08:14,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:08:14,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:08:14,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:08:14,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:08:14,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:08:14,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:08:14,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:08:14,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:08:14,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:08:14,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:08:14,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:08:14,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:08:14,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:08:14,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:08:14,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:08:14,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:08:14,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:08:14,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:08:14,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:08:14,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:08:14,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:08:14,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:08:14,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:08:14,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:08:14,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:08:14,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:08:14,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:08:14,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:08:14,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:08:14,378 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:08:14,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:08:14,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:08:14,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:08:14,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:08:14,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:08:14,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:08:14,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:08:14,381 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:08:14,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:08:14,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:08:14,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:08:14,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:08:14,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:08:14,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:08:14,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:08:14,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:08:14,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:08:14,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:08:14,383 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:08:14,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:08:14,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:08:14,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:08:14,386 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_4c060822-24ed-46eb-b1da-41026b30010c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e928bce7a5eba940349fe986fce1ee6d952316584823caa32f480aa4c9f0c38 [2021-11-13 18:08:14,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:08:14,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:08:14,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:08:14,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:08:14,750 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:08:14,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_sdio.ko-entry_point.cil.out.i [2021-11-13 18:08:14,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/data/e99c21c71/ec1542c213f54ed699ab5823d3239a92/FLAGe51ecd0ce [2021-11-13 18:08:15,832 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:08:15,833 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_sdio.ko-entry_point.cil.out.i [2021-11-13 18:08:15,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/data/e99c21c71/ec1542c213f54ed699ab5823d3239a92/FLAGe51ecd0ce [2021-11-13 18:08:16,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/data/e99c21c71/ec1542c213f54ed699ab5823d3239a92 [2021-11-13 18:08:16,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:08:16,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:08:16,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:08:16,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:08:16,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:08:16,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:08:16" (1/1) ... [2021-11-13 18:08:16,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382224a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:16, skipping insertion in model container [2021-11-13 18:08:16,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:08:16" (1/1) ... [2021-11-13 18:08:16,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:08:16,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:08:17,618 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_4c060822-24ed-46eb-b1da-41026b30010c/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_sdio.ko-entry_point.cil.out.i[209352,209365] [2021-11-13 18:08:18,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:08:18,880 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:08:19,084 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_4c060822-24ed-46eb-b1da-41026b30010c/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_sdio.ko-entry_point.cil.out.i[209352,209365] [2021-11-13 18:08:19,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:08:19,584 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:08:19,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19 WrapperNode [2021-11-13 18:08:19,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:08:19,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:08:19,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:08:19,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:08:19,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (1/1) ... [2021-11-13 18:08:19,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (1/1) ... [2021-11-13 18:08:20,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:08:20,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:08:20,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:08:20,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:08:20,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (1/1) ... [2021-11-13 18:08:20,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (1/1) ... [2021-11-13 18:08:20,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (1/1) ... [2021-11-13 18:08:20,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (1/1) ... [2021-11-13 18:08:20,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (1/1) ... [2021-11-13 18:08:20,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (1/1) ... [2021-11-13 18:08:20,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (1/1) ... [2021-11-13 18:08:20,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:08:20,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:08:20,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:08:20,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:08:20,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (1/1) ... [2021-11-13 18:08:20,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:08:20,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:08:20,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:08:20,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:08:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-13 18:08:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-13 18:08:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2021-11-13 18:08:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2021-11-13 18:08:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:08:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_host [2021-11-13 18:08:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_host [2021-11-13 18:08:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_to_card [2021-11-13 18:08:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_to_card [2021-11-13 18:08:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:08:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:08:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:08:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:08:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:08:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_get_host_pm_caps [2021-11-13 18:08:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_get_host_pm_caps [2021-11-13 18:08:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_sync [2021-11-13 18:08:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_sync [2021-11-13 18:08:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:08:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:08:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_card_to_host [2021-11-13 18:08:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_card_to_host [2021-11-13 18:08:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure mp_tx_aggr_port_limit_reached [2021-11-13 18:08:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_tx_aggr_port_limit_reached [2021-11-13 18:08:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:08:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:08:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-13 18:08:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-13 18:08:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2021-11-13 18:08:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2021-11-13 18:08:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 18:08:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 18:08:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:08:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:08:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-13 18:08:20,400 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-13 18:08:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_reg [2021-11-13 18:08:20,400 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_reg [2021-11-13 18:08:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:08:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg [2021-11-13 18:08:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg [2021-11-13 18:08:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:08:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:08:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_data_sync [2021-11-13 18:08:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_data_sync [2021-11-13 18:08:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:08:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:08:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-13 18:08:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:08:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:08:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:08:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:08:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:08:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 18:08:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 18:08:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_irq [2021-11-13 18:08:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_irq [2021-11-13 18:08:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_disable_func [2021-11-13 18:08:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_disable_func [2021-11-13 18:08:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:08:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:08:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_claim_host [2021-11-13 18:08:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_claim_host [2021-11-13 18:08:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg_locked [2021-11-13 18:08:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg_locked [2021-11-13 18:08:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_cmdrsp_complete [2021-11-13 18:08:20,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_cmdrsp_complete [2021-11-13 18:08:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:08:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-13 18:08:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 18:08:20,407 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 18:08:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:08:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-11-13 18:08:20,407 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-11-13 18:08:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:08:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 18:08:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 18:08:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 18:08:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 18:08:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-11-13 18:08:20,409 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-11-13 18:08:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 18:08:20,409 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 18:08:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-13 18:08:20,410 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-13 18:08:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:08:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_host_to_card_mp_aggr [2021-11-13 18:08:20,410 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_host_to_card_mp_aggr [2021-11-13 18:08:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_resume [2021-11-13 18:08:20,411 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_resume [2021-11-13 18:08:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:08:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-13 18:08:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:08:20,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:08:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_decode_rx_packet [2021-11-13 18:08:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_decode_rx_packet [2021-11-13 18:08:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:08:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:08:21,651 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:08:50,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:08:50,994 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 18:08:50,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:08:50 BoogieIcfgContainer [2021-11-13 18:08:50,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:08:51,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:08:51,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:08:51,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:08:51,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:08:16" (1/3) ... [2021-11-13 18:08:51,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd3eb3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:08:51, skipping insertion in model container [2021-11-13 18:08:51,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:08:19" (2/3) ... [2021-11-13 18:08:51,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd3eb3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:08:51, skipping insertion in model container [2021-11-13 18:08:51,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:08:50" (3/3) ... [2021-11-13 18:08:51,009 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i [2021-11-13 18:08:51,016 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:08:51,016 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:08:51,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:08:51,088 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 18:08:51,088 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:08:51,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 1067 states, 834 states have (on average 1.4388489208633093) internal successors, (1200), 847 states have internal predecessors, (1200), 192 states have call successors, (192), 40 states have call predecessors, (192), 39 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) [2021-11-13 18:08:51,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:08:51,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:08:51,163 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:08:51,164 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:08:51,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:08:51,170 INFO L85 PathProgramCache]: Analyzing trace with hash -601957003, now seen corresponding path program 1 times [2021-11-13 18:08:51,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:08:51,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170672017] [2021-11-13 18:08:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:08:51,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:08:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:52,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:08:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:52,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:08:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:52,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:08:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:52,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:08:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:08:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:08:52,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:08:52,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170672017] [2021-11-13 18:08:52,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170672017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:08:52,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:08:52,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:08:52,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355745734] [2021-11-13 18:08:52,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:08:52,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:08:52,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:08:52,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:08:52,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:08:52,408 INFO L87 Difference]: Start difference. First operand has 1067 states, 834 states have (on average 1.4388489208633093) internal successors, (1200), 847 states have internal predecessors, (1200), 192 states have call successors, (192), 40 states have call predecessors, (192), 39 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:08:54,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:08:56,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:08:58,942 WARN L515 Checker$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 18:09:05,641 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 18:09:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:09:07,674 INFO L93 Difference]: Finished difference Result 3230 states and 4862 transitions. [2021-11-13 18:09:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:09:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2021-11-13 18:09:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:09:07,720 INFO L225 Difference]: With dead ends: 3230 [2021-11-13 18:09:07,720 INFO L226 Difference]: Without dead ends: 2148 [2021-11-13 18:09:07,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 18:09:07,738 INFO L933 BasicCegarLoop]: 1812 mSDtfsCounter, 1720 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 421 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13982.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.46ms SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14861.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:09:07,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1840 Valid, 4108 Invalid, 1259 Unknown, 0 Unchecked, 60.46ms Time], IncrementalHoareTripleChecker [421 Valid, 834 Invalid, 4 Unknown, 0 Unchecked, 14861.83ms Time] [2021-11-13 18:09:07,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2021-11-13 18:09:08,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2066. [2021-11-13 18:09:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 1626 states have (on average 1.4317343173431734) internal successors, (2328), 1636 states have internal predecessors, (2328), 363 states have call successors, (363), 77 states have call predecessors, (363), 76 states have return successors, (362), 360 states have call predecessors, (362), 362 states have call successors, (362) [2021-11-13 18:09:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 3053 transitions. [2021-11-13 18:09:08,078 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 3053 transitions. Word has length 46 [2021-11-13 18:09:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:09:08,081 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 3053 transitions. [2021-11-13 18:09:08,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:09:08,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 3053 transitions. [2021-11-13 18:09:08,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:09:08,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:08,097 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:09:08,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:09:08,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:09:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:08,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1981556391, now seen corresponding path program 1 times [2021-11-13 18:09:08,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:08,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601714484] [2021-11-13 18:09:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:08,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:09:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:09:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:09:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:09:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:09:08,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:08,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601714484] [2021-11-13 18:09:08,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601714484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:08,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:08,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:09:08,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862981002] [2021-11-13 18:09:08,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:08,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:09:08,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:08,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:09:08,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:09:08,679 INFO L87 Difference]: Start difference. First operand 2066 states and 3053 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:09:10,790 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 18:09:13,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:09:17,040 WARN L515 Checker$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 18:09:21,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:09:22,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:09:22,950 INFO L93 Difference]: Finished difference Result 6335 states and 9421 transitions. [2021-11-13 18:09:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:09:22,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2021-11-13 18:09:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:09:22,991 INFO L225 Difference]: With dead ends: 6335 [2021-11-13 18:09:22,992 INFO L226 Difference]: Without dead ends: 4271 [2021-11-13 18:09:23,002 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 18:09:23,004 INFO L933 BasicCegarLoop]: 1727 mSDtfsCounter, 1770 mSDsluCounter, 5447 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 421 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12968.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 7174 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.47ms SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13752.99ms IncrementalHoareTripleChecker+Time [2021-11-13 18:09:23,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1894 Valid, 7174 Invalid, 1610 Unknown, 0 Unchecked, 58.47ms Time], IncrementalHoareTripleChecker [421 Valid, 1186 Invalid, 3 Unknown, 0 Unchecked, 13752.99ms Time] [2021-11-13 18:09:23,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2021-11-13 18:09:23,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4137. [2021-11-13 18:09:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 3257 states have (on average 1.431992631255757) internal successors, (4664), 3279 states have internal predecessors, (4664), 721 states have call successors, (721), 153 states have call predecessors, (721), 158 states have return successors, (738), 720 states have call predecessors, (738), 720 states have call successors, (738) [2021-11-13 18:09:23,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 6123 transitions. [2021-11-13 18:09:23,244 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 6123 transitions. Word has length 46 [2021-11-13 18:09:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:09:23,245 INFO L470 AbstractCegarLoop]: Abstraction has 4137 states and 6123 transitions. [2021-11-13 18:09:23,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:09:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 6123 transitions. [2021-11-13 18:09:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 18:09:23,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:23,261 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-13 18:09:23,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:09:23,262 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:09:23,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:23,263 INFO L85 PathProgramCache]: Analyzing trace with hash -642422905, now seen corresponding path program 1 times [2021-11-13 18:09:23,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:23,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804148592] [2021-11-13 18:09:23,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:23,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:09:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:09:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:09:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:09:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 18:09:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:09:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 18:09:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:09:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:09:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:09:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-13 18:09:23,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:23,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804148592] [2021-11-13 18:09:23,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804148592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:23,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:23,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:09:23,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638680870] [2021-11-13 18:09:23,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:23,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:09:23,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:09:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:09:23,916 INFO L87 Difference]: Start difference. First operand 4137 states and 6123 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 18:09:26,031 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 18:09:28,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:09:35,059 WARN L515 Checker$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 18:09:35,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:09:35,885 INFO L93 Difference]: Finished difference Result 6996 states and 10303 transitions. [2021-11-13 18:09:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:09:35,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2021-11-13 18:09:35,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:09:35,909 INFO L225 Difference]: With dead ends: 6996 [2021-11-13 18:09:35,909 INFO L226 Difference]: Without dead ends: 2871 [2021-11-13 18:09:35,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:09:35,926 INFO L933 BasicCegarLoop]: 1537 mSDtfsCounter, 768 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 458 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11010.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.04ms SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11758.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:09:35,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 3642 Invalid, 1237 Unknown, 0 Unchecked, 22.04ms Time], IncrementalHoareTripleChecker [458 Valid, 776 Invalid, 3 Unknown, 0 Unchecked, 11758.56ms Time] [2021-11-13 18:09:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2021-11-13 18:09:36,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2756. [2021-11-13 18:09:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2189 states have (on average 1.423937871174052) internal successors, (3117), 2202 states have internal predecessors, (3117), 446 states have call successors, (446), 118 states have call predecessors, (446), 120 states have return successors, (456), 443 states have call predecessors, (456), 445 states have call successors, (456) [2021-11-13 18:09:36,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 4019 transitions. [2021-11-13 18:09:36,073 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 4019 transitions. Word has length 103 [2021-11-13 18:09:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:09:36,076 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 4019 transitions. [2021-11-13 18:09:36,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 18:09:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 4019 transitions. [2021-11-13 18:09:36,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-13 18:09:36,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:36,086 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:09:36,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:09:36,087 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:09:36,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:36,088 INFO L85 PathProgramCache]: Analyzing trace with hash 96929181, now seen corresponding path program 1 times [2021-11-13 18:09:36,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:36,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922830110] [2021-11-13 18:09:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:36,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:09:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:36,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:09:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:36,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:09:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:09:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:36,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 18:09:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:36,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 18:09:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 18:09:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:37,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:09:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:37,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 18:09:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:37,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:09:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:37,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:09:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:09:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:37,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:09:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:09:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-13 18:09:37,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:37,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922830110] [2021-11-13 18:09:37,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922830110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:37,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:37,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:09:37,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444380823] [2021-11-13 18:09:37,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:37,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:09:37,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:37,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:09:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:09:37,393 INFO L87 Difference]: Start difference. First operand 2756 states and 4019 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-13 18:09:39,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:09:41,698 WARN L515 Checker$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 18:09:47,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:09:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:09:48,747 INFO L93 Difference]: Finished difference Result 5380 states and 7886 transitions. [2021-11-13 18:09:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:09:48,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2021-11-13 18:09:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:09:48,770 INFO L225 Difference]: With dead ends: 5380 [2021-11-13 18:09:48,771 INFO L226 Difference]: Without dead ends: 2846 [2021-11-13 18:09:48,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:09:48,780 INFO L933 BasicCegarLoop]: 1500 mSDtfsCounter, 313 mSDsluCounter, 4921 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 384 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10394.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 6421 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.20ms SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11042.05ms IncrementalHoareTripleChecker+Time [2021-11-13 18:09:48,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 6421 Invalid, 1434 Unknown, 0 Unchecked, 28.20ms Time], IncrementalHoareTripleChecker [384 Valid, 1048 Invalid, 2 Unknown, 0 Unchecked, 11042.05ms Time] [2021-11-13 18:09:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-11-13 18:09:48,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2756. [2021-11-13 18:09:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2187 states have (on average 1.4224965706447188) internal successors, (3111), 2201 states have internal predecessors, (3111), 446 states have call successors, (446), 118 states have call predecessors, (446), 122 states have return successors, (462), 444 states have call predecessors, (462), 445 states have call successors, (462) [2021-11-13 18:09:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 4019 transitions. [2021-11-13 18:09:48,910 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 4019 transitions. Word has length 144 [2021-11-13 18:09:48,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:09:48,911 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 4019 transitions. [2021-11-13 18:09:48,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-13 18:09:48,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 4019 transitions. [2021-11-13 18:09:48,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-13 18:09:48,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:09:48,921 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:09:48,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:09:48,921 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:09:48,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:09:48,922 INFO L85 PathProgramCache]: Analyzing trace with hash 36910958, now seen corresponding path program 1 times [2021-11-13 18:09:48,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:09:48,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382633848] [2021-11-13 18:09:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:09:48,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:09:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:09:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:09:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:09:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:09:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 18:09:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 18:09:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 18:09:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:09:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 18:09:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:09:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:09:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:09:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:09:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:56,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:09:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:09:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:09:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-13 18:09:57,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:09:57,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382633848] [2021-11-13 18:09:57,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382633848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:09:57,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:09:57,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-13 18:09:57,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384494682] [2021-11-13 18:09:57,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:09:57,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:09:57,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:09:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:09:57,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:09:57,129 INFO L87 Difference]: Start difference. First operand 2756 states and 4019 transitions. Second operand has 17 states, 16 states have (on average 6.0) internal successors, (96), 11 states have internal predecessors, (96), 3 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 18:09:59,247 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 18:10:01,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:03,837 WARN L515 Checker$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 18:10:05,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:17,764 WARN L515 Checker$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 18:10:21,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:23,692 WARN L515 Checker$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 18:10:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:10:26,840 INFO L93 Difference]: Finished difference Result 6799 states and 10167 transitions. [2021-11-13 18:10:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:10:26,841 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.0) internal successors, (96), 11 states have internal predecessors, (96), 3 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 151 [2021-11-13 18:10:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:10:26,873 INFO L225 Difference]: With dead ends: 6799 [2021-11-13 18:10:26,874 INFO L226 Difference]: Without dead ends: 4265 [2021-11-13 18:10:26,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:10:26,884 INFO L933 BasicCegarLoop]: 2374 mSDtfsCounter, 839 mSDsluCounter, 30958 mSDsCounter, 0 mSdLazyCounter, 4082 mSolverCounterSat, 201 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27221.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 33332 SdHoareTripleChecker+Invalid, 4289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 99.00ms SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 4082 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29102.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:10:26,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 33332 Invalid, 4289 Unknown, 0 Unchecked, 99.00ms Time], IncrementalHoareTripleChecker [201 Valid, 4082 Invalid, 6 Unknown, 0 Unchecked, 29102.81ms Time] [2021-11-13 18:10:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2021-11-13 18:10:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 2763. [2021-11-13 18:10:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2193 states have (on average 1.4204286365709073) internal successors, (3115), 2205 states have internal predecessors, (3115), 446 states have call successors, (446), 118 states have call predecessors, (446), 123 states have return successors, (464), 447 states have call predecessors, (464), 445 states have call successors, (464) [2021-11-13 18:10:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4025 transitions. [2021-11-13 18:10:27,061 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4025 transitions. Word has length 151 [2021-11-13 18:10:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:10:27,062 INFO L470 AbstractCegarLoop]: Abstraction has 2763 states and 4025 transitions. [2021-11-13 18:10:27,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.0) internal successors, (96), 11 states have internal predecessors, (96), 3 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 18:10:27,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4025 transitions. [2021-11-13 18:10:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:10:27,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:10:27,077 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:27,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:10:27,077 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:10:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:10:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1511771000, now seen corresponding path program 1 times [2021-11-13 18:10:27,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:10:27,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961484711] [2021-11-13 18:10:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:10:27,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:10:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:10:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:10:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:10:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:10:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 18:10:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 18:10:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 18:10:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:10:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 18:10:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:10:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:10:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:27,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:10:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:10:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-13 18:10:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:28,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-13 18:10:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-13 18:10:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:10:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:10:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:10:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-13 18:10:28,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:10:28,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961484711] [2021-11-13 18:10:28,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961484711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:10:28,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:10:28,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:10:28,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769095585] [2021-11-13 18:10:28,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:10:28,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:10:28,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:10:28,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:10:28,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:10:28,134 INFO L87 Difference]: Start difference. First operand 2763 states and 4025 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 18:10:30,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:32,481 WARN L515 Checker$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 18:10:40,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:42,597 WARN L515 Checker$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 18:10:47,686 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 18:10:49,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:10:49,616 INFO L93 Difference]: Finished difference Result 8015 states and 12105 transitions. [2021-11-13 18:10:49,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:10:49,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 190 [2021-11-13 18:10:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:10:49,657 INFO L225 Difference]: With dead ends: 8015 [2021-11-13 18:10:49,657 INFO L226 Difference]: Without dead ends: 5474 [2021-11-13 18:10:49,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:10:49,668 INFO L933 BasicCegarLoop]: 2469 mSDtfsCounter, 1931 mSDsluCounter, 6261 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 410 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19920.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 8730 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.97ms SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21200.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:10:49,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2065 Valid, 8730 Invalid, 2485 Unknown, 0 Unchecked, 37.97ms Time], IncrementalHoareTripleChecker [410 Valid, 2071 Invalid, 4 Unknown, 0 Unchecked, 21200.59ms Time] [2021-11-13 18:10:49,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2021-11-13 18:10:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 2767. [2021-11-13 18:10:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2197 states have (on average 1.4196631770596269) internal successors, (3119), 2209 states have internal predecessors, (3119), 446 states have call successors, (446), 118 states have call predecessors, (446), 123 states have return successors, (464), 447 states have call predecessors, (464), 445 states have call successors, (464) [2021-11-13 18:10:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 4029 transitions. [2021-11-13 18:10:49,883 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 4029 transitions. Word has length 190 [2021-11-13 18:10:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:10:49,884 INFO L470 AbstractCegarLoop]: Abstraction has 2767 states and 4029 transitions. [2021-11-13 18:10:49,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 18:10:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 4029 transitions. [2021-11-13 18:10:49,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 18:10:49,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:10:49,896 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:10:49,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:10:49,897 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:10:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:10:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1309859301, now seen corresponding path program 1 times [2021-11-13 18:10:49,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:10:49,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362397989] [2021-11-13 18:10:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:10:49,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:10:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:10:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:10:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:10:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:10:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 18:10:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 18:10:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 18:10:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:10:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 18:10:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:10:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:10:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:10:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:10:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-13 18:10:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 18:10:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-13 18:10:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:10:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:10:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:10:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:10:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:10:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-13 18:10:50,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:10:50,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362397989] [2021-11-13 18:10:50,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362397989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:10:50,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:10:50,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:10:50,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030993000] [2021-11-13 18:10:50,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:10:50,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:10:50,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:10:50,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:10:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:10:50,823 INFO L87 Difference]: Start difference. First operand 2767 states and 4029 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:10:52,926 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 18:10:54,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:10:57,170 WARN L515 Checker$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 18:10:59,203 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 18:11:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:07,178 INFO L93 Difference]: Finished difference Result 5397 states and 7888 transitions. [2021-11-13 18:11:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:11:07,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 200 [2021-11-13 18:11:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:07,196 INFO L225 Difference]: With dead ends: 5397 [2021-11-13 18:11:07,196 INFO L226 Difference]: Without dead ends: 2852 [2021-11-13 18:11:07,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:11:07,206 INFO L933 BasicCegarLoop]: 1503 mSDtfsCounter, 156 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 191 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15276.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 4294 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.97ms SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16221.09ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:07,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 4294 Invalid, 1488 Unknown, 0 Unchecked, 18.97ms Time], IncrementalHoareTripleChecker [191 Valid, 1293 Invalid, 4 Unknown, 0 Unchecked, 16221.09ms Time] [2021-11-13 18:11:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-11-13 18:11:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2769. [2021-11-13 18:11:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2199 states have (on average 1.419281491587085) internal successors, (3121), 2211 states have internal predecessors, (3121), 446 states have call successors, (446), 118 states have call predecessors, (446), 123 states have return successors, (464), 447 states have call predecessors, (464), 445 states have call successors, (464) [2021-11-13 18:11:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 4031 transitions. [2021-11-13 18:11:07,341 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 4031 transitions. Word has length 200 [2021-11-13 18:11:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:07,341 INFO L470 AbstractCegarLoop]: Abstraction has 2769 states and 4031 transitions. [2021-11-13 18:11:07,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:11:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 4031 transitions. [2021-11-13 18:11:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 18:11:07,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:07,353 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:11:07,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:11:07,354 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:11:07,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:07,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1768954269, now seen corresponding path program 1 times [2021-11-13 18:11:07,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:07,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455368519] [2021-11-13 18:11:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:07,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:12:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:12:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:12:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:12:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:54,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:12:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:54,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 18:12:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:54,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 18:12:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 18:12:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:12:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 18:12:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:12:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:55,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:12:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:12:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:55,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 18:12:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-13 18:12:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 18:12:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-13 18:12:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:55,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:12:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:12:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:55,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:12:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:12:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-13 18:12:56,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:12:56,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455368519] [2021-11-13 18:12:56,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455368519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:12:56,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:12:56,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-13 18:12:56,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616977029] [2021-11-13 18:12:56,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:12:56,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:12:56,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:12:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:12:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:12:56,090 INFO L87 Difference]: Start difference. First operand 2769 states and 4031 transitions. Second operand has 17 states, 16 states have (on average 7.9375) internal successors, (127), 11 states have internal predecessors, (127), 3 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:12:58,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:00,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:08,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:12,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:16,108 WARN L515 Checker$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 18:13:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:13:16,431 INFO L93 Difference]: Finished difference Result 6976 states and 10413 transitions. [2021-11-13 18:13:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:13:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.9375) internal successors, (127), 11 states have internal predecessors, (127), 3 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) Word has length 200 [2021-11-13 18:13:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:13:16,465 INFO L225 Difference]: With dead ends: 6976 [2021-11-13 18:13:16,466 INFO L226 Difference]: Without dead ends: 4429 [2021-11-13 18:13:16,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2021-11-13 18:13:16,478 INFO L933 BasicCegarLoop]: 2424 mSDtfsCounter, 1085 mSDsluCounter, 30472 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 409 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18268.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 32896 SdHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.66ms SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19692.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:13:16,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 32896 Invalid, 3649 Unknown, 0 Unchecked, 72.66ms Time], IncrementalHoareTripleChecker [409 Valid, 3236 Invalid, 4 Unknown, 0 Unchecked, 19692.55ms Time] [2021-11-13 18:13:16,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4429 states. [2021-11-13 18:13:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4429 to 2773. [2021-11-13 18:13:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2773 states, 2203 states have (on average 1.4185201997276442) internal successors, (3125), 2213 states have internal predecessors, (3125), 446 states have call successors, (446), 118 states have call predecessors, (446), 123 states have return successors, (464), 449 states have call predecessors, (464), 445 states have call successors, (464) [2021-11-13 18:13:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 4035 transitions. [2021-11-13 18:13:16,692 INFO L78 Accepts]: Start accepts. Automaton has 2773 states and 4035 transitions. Word has length 200 [2021-11-13 18:13:16,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:13:16,693 INFO L470 AbstractCegarLoop]: Abstraction has 2773 states and 4035 transitions. [2021-11-13 18:13:16,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.9375) internal successors, (127), 11 states have internal predecessors, (127), 3 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 18:13:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2773 states and 4035 transitions. [2021-11-13 18:13:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-13 18:13:16,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:13:16,708 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:16,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:13:16,708 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:13:16,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:16,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1821148220, now seen corresponding path program 1 times [2021-11-13 18:13:16,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:16,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223573529] [2021-11-13 18:13:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:16,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:13:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:13:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:13:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:13:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:13:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 18:13:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 18:13:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 18:13:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:13:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-13 18:13:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:13:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 18:13:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 18:13:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:13:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-13 18:13:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-13 18:13:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-13 18:13:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:13:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:13:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-13 18:13:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:13:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-13 18:13:17,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:13:17,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223573529] [2021-11-13 18:13:17,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223573529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:13:17,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:13:17,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 18:13:17,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954618126] [2021-11-13 18:13:17,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:13:17,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:13:17,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:13:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:13:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:13:17,923 INFO L87 Difference]: Start difference. First operand 2773 states and 4035 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 18:13:20,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:22,405 WARN L515 Checker$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 18:13:35,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:36,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:37,763 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:42,200 WARN L515 Checker$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 18:13:48,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:49,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:50,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:13:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:13:51,400 INFO L93 Difference]: Finished difference Result 6692 states and 9962 transitions. [2021-11-13 18:13:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:13:51,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 202 [2021-11-13 18:13:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:13:51,425 INFO L225 Difference]: With dead ends: 6692 [2021-11-13 18:13:51,426 INFO L226 Difference]: Without dead ends: 4141 [2021-11-13 18:13:51,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:13:51,437 INFO L933 BasicCegarLoop]: 2244 mSDtfsCounter, 777 mSDsluCounter, 10641 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 213 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30851.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 12885 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.63ms SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33175.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:13:51,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 12885 Invalid, 3467 Unknown, 0 Unchecked, 54.63ms Time], IncrementalHoareTripleChecker [213 Valid, 3251 Invalid, 3 Unknown, 0 Unchecked, 33175.81ms Time] [2021-11-13 18:13:51,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2021-11-13 18:13:51,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 2781. [2021-11-13 18:13:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2781 states, 2209 states have (on average 1.4173834314169307) internal successors, (3131), 2219 states have internal predecessors, (3131), 446 states have call successors, (446), 118 states have call predecessors, (446), 125 states have return successors, (468), 451 states have call predecessors, (468), 445 states have call successors, (468) [2021-11-13 18:13:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 4045 transitions. [2021-11-13 18:13:51,604 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 4045 transitions. Word has length 202 [2021-11-13 18:13:51,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:13:51,605 INFO L470 AbstractCegarLoop]: Abstraction has 2781 states and 4045 transitions. [2021-11-13 18:13:51,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-13 18:13:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 4045 transitions. [2021-11-13 18:13:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-13 18:13:51,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:13:51,617 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:51,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:13:51,618 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:13:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:13:51,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1917943735, now seen corresponding path program 1 times [2021-11-13 18:13:51,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:13:51,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33031509] [2021-11-13 18:13:51,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:13:51,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:14:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:14:28,086 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:14:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:14:39,776 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:14:39,776 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:14:39,777 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:14:39,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:14:39,784 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:14:39,789 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:14:40,316 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 18:14:40,317 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 18:14:40,319 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 18:14:40,320 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 18:14:40,332 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 18:14:40,332 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 18:14:40,335 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 18:14:40,335 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 18:14:40,338 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 18:14:40,338 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 18:14:40,887 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 18:14:40,890 INFO L158 Benchmark]: Toolchain (without parser) took 384577.16ms. Allocated memory was 107.0MB in the beginning and 5.0GB in the end (delta: 4.8GB). Free memory was 74.8MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2021-11-13 18:14:40,891 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 107.0MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:14:40,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3270.11ms. Allocated memory was 107.0MB in the beginning and 224.4MB in the end (delta: 117.4MB). Free memory was 74.5MB in the beginning and 103.6MB in the end (delta: -29.1MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. [2021-11-13 18:14:40,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 413.56ms. Allocated memory is still 224.4MB. Free memory was 103.6MB in the beginning and 135.6MB in the end (delta: -32.0MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2021-11-13 18:14:40,893 INFO L158 Benchmark]: Boogie Preprocessor took 289.81ms. Allocated memory is still 224.4MB. Free memory was 135.6MB in the beginning and 102.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-13 18:14:40,894 INFO L158 Benchmark]: RCFGBuilder took 30707.59ms. Allocated memory was 224.4MB in the beginning and 979.4MB in the end (delta: 755.0MB). Free memory was 102.0MB in the beginning and 542.7MB in the end (delta: -440.7MB). Peak memory consumption was 573.3MB. Max. memory is 16.1GB. [2021-11-13 18:14:40,894 INFO L158 Benchmark]: TraceAbstraction took 349888.89ms. Allocated memory was 979.4MB in the beginning and 5.0GB in the end (delta: 4.0GB). Free memory was 541.6MB in the beginning and 3.7GB in the end (delta: -3.1GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2021-11-13 18:14:40,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 107.0MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3270.11ms. Allocated memory was 107.0MB in the beginning and 224.4MB in the end (delta: 117.4MB). Free memory was 74.5MB in the beginning and 103.6MB in the end (delta: -29.1MB). Peak memory consumption was 89.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 413.56ms. Allocated memory is still 224.4MB. Free memory was 103.6MB in the beginning and 135.6MB in the end (delta: -32.0MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 289.81ms. Allocated memory is still 224.4MB. Free memory was 135.6MB in the beginning and 102.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * RCFGBuilder took 30707.59ms. Allocated memory was 224.4MB in the beginning and 979.4MB in the end (delta: 755.0MB). Free memory was 102.0MB in the beginning and 542.7MB in the end (delta: -440.7MB). Peak memory consumption was 573.3MB. Max. memory is 16.1GB. * TraceAbstraction took 349888.89ms. Allocated memory was 979.4MB in the beginning and 5.0GB in the end (delta: 4.0GB). Free memory was 541.6MB in the beginning and 3.7GB in the end (delta: -3.1GB). Peak memory consumption was 2.3GB. 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 18:14:41,119 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-13 18:14:41,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_sdio.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_4c060822-24ed-46eb-b1da-41026b30010c/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 4e928bce7a5eba940349fe986fce1ee6d952316584823caa32f480aa4c9f0c38 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:14:43,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:14:43,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:14:43,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:14:43,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:14:43,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:14:43,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:14:43,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:14:43,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:14:44,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:14:44,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:14:44,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:14:44,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:14:44,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:14:44,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:14:44,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:14:44,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:14:44,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:14:44,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:14:44,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:14:44,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:14:44,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:14:44,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:14:44,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:14:44,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:14:44,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:14:44,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:14:44,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:14:44,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:14:44,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:14:44,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:14:44,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:14:44,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:14:44,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:14:44,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:14:44,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:14:44,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:14:44,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:14:44,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:14:44,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:14:44,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:14:44,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-13 18:14:44,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:14:44,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:14:44,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:14:44,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:14:44,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:14:44,101 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:14:44,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:14:44,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:14:44,102 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:14:44,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:14:44,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:14:44,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:14:44,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:14:44,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:14:44,104 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:14:44,104 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:14:44,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:14:44,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:14:44,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:14:44,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:14:44,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:14:44,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:14:44,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:14:44,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:14:44,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:14:44,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:14:44,107 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:14:44,108 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:14:44,108 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:14:44,108 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:14:44,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:14:44,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:14:44,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:14:44,109 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_4c060822-24ed-46eb-b1da-41026b30010c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e928bce7a5eba940349fe986fce1ee6d952316584823caa32f480aa4c9f0c38 [2021-11-13 18:14:44,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:14:44,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:14:44,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:14:44,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:14:44,631 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:14:44,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_sdio.ko-entry_point.cil.out.i [2021-11-13 18:14:44,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/data/e2bcf7f69/df843fabb1ec40baa6e5df5052567261/FLAGf1638087d [2021-11-13 18:14:45,915 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:14:45,916 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/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_sdio.ko-entry_point.cil.out.i [2021-11-13 18:14:45,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/data/e2bcf7f69/df843fabb1ec40baa6e5df5052567261/FLAGf1638087d [2021-11-13 18:14:46,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/data/e2bcf7f69/df843fabb1ec40baa6e5df5052567261 [2021-11-13 18:14:46,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:14:46,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:14:46,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:14:46,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:14:46,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:14:46,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:14:46" (1/1) ... [2021-11-13 18:14:46,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0c2425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:46, skipping insertion in model container [2021-11-13 18:14:46,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:14:46" (1/1) ... [2021-11-13 18:14:46,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:14:46,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:14:47,635 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_4c060822-24ed-46eb-b1da-41026b30010c/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_sdio.ko-entry_point.cil.out.i[209352,209365] [2021-11-13 18:14:48,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:14:48,844 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:14:49,126 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_4c060822-24ed-46eb-b1da-41026b30010c/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_sdio.ko-entry_point.cil.out.i[209352,209365] [2021-11-13 18:14:49,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:14:49,635 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:14:49,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49 WrapperNode [2021-11-13 18:14:49,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:14:49,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:14:49,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:14:49,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:14:49,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (1/1) ... [2021-11-13 18:14:49,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (1/1) ... [2021-11-13 18:14:49,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:14:49,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:14:49,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:14:49,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:14:50,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (1/1) ... [2021-11-13 18:14:50,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (1/1) ... [2021-11-13 18:14:50,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (1/1) ... [2021-11-13 18:14:50,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (1/1) ... [2021-11-13 18:14:50,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (1/1) ... [2021-11-13 18:14:50,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (1/1) ... [2021-11-13 18:14:50,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (1/1) ... [2021-11-13 18:14:50,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:14:50,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:14:50,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:14:50,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:14:50,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (1/1) ... [2021-11-13 18:14:50,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:14:50,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:14:50,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:14:50,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:14:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2021-11-13 18:14:50,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2021-11-13 18:14:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:14:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_host [2021-11-13 18:14:50,438 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_host [2021-11-13 18:14:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 18:14:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:14:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:14:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 18:14:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:14:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:14:50,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:14:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_card_to_host [2021-11-13 18:14:50,440 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_card_to_host [2021-11-13 18:14:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:14:50,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:14:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_get_priv [2021-11-13 18:14:50,440 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_get_priv [2021-11-13 18:14:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 18:14:50,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 18:14:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-13 18:14:50,441 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-13 18:14:50,441 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_reg [2021-11-13 18:14:50,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_reg [2021-11-13 18:14:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg [2021-11-13 18:14:50,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg [2021-11-13 18:14:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:14:50,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:14:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_read_data_sync [2021-11-13 18:14:50,443 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_read_data_sync [2021-11-13 18:14:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:14:50,443 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:14:50,443 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:14:50,443 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:14:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_disable_func [2021-11-13 18:14:50,444 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_disable_func [2021-11-13 18:14:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:14:50,444 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_reg_locked [2021-11-13 18:14:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_reg_locked [2021-11-13 18:14:50,445 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_cmdrsp_complete [2021-11-13 18:14:50,446 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_cmdrsp_complete [2021-11-13 18:14:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:14:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-13 18:14:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 18:14:50,447 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 18:14:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 18:14:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:14:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 18:14:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:14:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:14:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-11-13 18:14:50,448 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-11-13 18:14:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:14:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 18:14:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:14:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 18:14:50,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 18:14:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 18:14:50,452 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 18:14:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-11-13 18:14:50,452 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-11-13 18:14:50,452 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 18:14:50,452 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 18:14:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_host_to_card_mp_aggr [2021-11-13 18:14:50,453 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_host_to_card_mp_aggr [2021-11-13 18:14:50,453 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_sdio_resume [2021-11-13 18:14:50,454 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_sdio_resume [2021-11-13 18:14:50,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:14:50,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:14:50,455 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_decode_rx_packet [2021-11-13 18:14:50,455 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_decode_rx_packet [2021-11-13 18:14:50,455 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-13 18:14:50,455 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-13 18:14:50,455 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_to_card [2021-11-13 18:14:50,456 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_to_card [2021-11-13 18:14:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_get_host_pm_caps [2021-11-13 18:14:50,456 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_get_host_pm_caps [2021-11-13 18:14:50,456 INFO L130 BoogieDeclarations]: Found specification of procedure mwifiex_write_data_sync [2021-11-13 18:14:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure mwifiex_write_data_sync [2021-11-13 18:14:50,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:14:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:14:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure mp_tx_aggr_port_limit_reached [2021-11-13 18:14:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_tx_aggr_port_limit_reached [2021-11-13 18:14:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-13 18:14:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-13 18:14:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:14:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:14:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 18:14:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 18:14:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 18:14:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 18:14:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:14:50,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:14:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-13 18:14:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:14:50,462 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 18:14:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 18:14:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_irq [2021-11-13 18:14:50,463 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_irq [2021-11-13 18:14:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:14:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 18:14:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 18:14:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_claim_host [2021-11-13 18:14:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_claim_host [2021-11-13 18:14:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 18:14:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 18:14:50,464 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 18:14:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-13 18:14:50,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-13 18:14:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 18:14:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-13 18:14:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:14:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:14:51,804 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:15:49,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:15:49,475 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 18:15:49,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:15:49 BoogieIcfgContainer [2021-11-13 18:15:49,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:15:49,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:15:49,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:15:49,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:15:49,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:14:46" (1/3) ... [2021-11-13 18:15:49,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516ae31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:15:49, skipping insertion in model container [2021-11-13 18:15:49,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:14:49" (2/3) ... [2021-11-13 18:15:49,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516ae31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:15:49, skipping insertion in model container [2021-11-13 18:15:49,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:15:49" (3/3) ... [2021-11-13 18:15:49,493 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwifiex--mwifiex_sdio.ko-entry_point.cil.out.i [2021-11-13 18:15:49,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:15:49,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:15:49,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:15:49,593 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 18:15:49,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:15:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 1067 states, 834 states have (on average 1.4388489208633093) internal successors, (1200), 847 states have internal predecessors, (1200), 192 states have call successors, (192), 40 states have call predecessors, (192), 39 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) [2021-11-13 18:15:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:15:49,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:15:49,667 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:49,668 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:15:49,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:15:49,676 INFO L85 PathProgramCache]: Analyzing trace with hash -601957003, now seen corresponding path program 1 times [2021-11-13 18:15:49,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:15:49,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278382223] [2021-11-13 18:15:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:15:49,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:15:49,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:15:49,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:15:49,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:16:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:03,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:16:03,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:16:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:16:03,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:16:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:16:04,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:16:04,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278382223] [2021-11-13 18:16:04,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278382223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:16:04,022 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:16:04,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:16:04,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573292711] [2021-11-13 18:16:04,027 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:16:04,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:16:04,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:16:04,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:16:04,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:16:04,080 INFO L87 Difference]: Start difference. First operand has 1067 states, 834 states have (on average 1.4388489208633093) internal successors, (1200), 847 states have internal predecessors, (1200), 192 states have call successors, (192), 40 states have call predecessors, (192), 39 states have return successors, (186), 185 states have call predecessors, (186), 186 states have call successors, (186) Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:16:06,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:09,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:16:13,020 INFO L93 Difference]: Finished difference Result 4167 states and 6251 transitions. [2021-11-13 18:16:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:16:13,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2021-11-13 18:16:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:16:13,103 INFO L225 Difference]: With dead ends: 4167 [2021-11-13 18:16:13,103 INFO L226 Difference]: Without dead ends: 3078 [2021-11-13 18:16:13,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 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 18:16:13,140 INFO L933 BasicCegarLoop]: 2157 mSDtfsCounter, 3998 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 342 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7943.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3998 SdHoareTripleChecker+Valid, 4857 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.11ms SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8507.90ms IncrementalHoareTripleChecker+Time [2021-11-13 18:16:13,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3998 Valid, 4857 Invalid, 729 Unknown, 0 Unchecked, 50.11ms Time], IncrementalHoareTripleChecker [342 Valid, 385 Invalid, 2 Unknown, 0 Unchecked, 8507.90ms Time] [2021-11-13 18:16:13,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-11-13 18:16:13,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3078. [2021-11-13 18:16:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 2423 states have (on average 1.4341725134131242) internal successors, (3475), 2438 states have internal predecessors, (3475), 540 states have call successors, (540), 115 states have call predecessors, (540), 114 states have return successors, (539), 536 states have call predecessors, (539), 539 states have call successors, (539) [2021-11-13 18:16:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 4554 transitions. [2021-11-13 18:16:13,592 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 4554 transitions. Word has length 46 [2021-11-13 18:16:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:16:13,594 INFO L470 AbstractCegarLoop]: Abstraction has 3078 states and 4554 transitions. [2021-11-13 18:16:13,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:16:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 4554 transitions. [2021-11-13 18:16:13,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:16:13,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:16:13,609 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:13,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:16:13,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:16:13,833 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:16:13,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:16:13,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1981556391, now seen corresponding path program 1 times [2021-11-13 18:16:13,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:16:13,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356069352] [2021-11-13 18:16:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:16:13,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:16:13,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:16:13,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:16:13,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:16:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:27,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:16:27,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:16:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:16:27,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:16:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:16:28,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:16:28,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356069352] [2021-11-13 18:16:28,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356069352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:16:28,100 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:16:28,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 18:16:28,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361514995] [2021-11-13 18:16:28,101 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:16:28,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:16:28,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:16:28,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:16:28,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:16:28,104 INFO L87 Difference]: Start difference. First operand 3078 states and 4554 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:16:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:16:29,432 INFO L93 Difference]: Finished difference Result 9207 states and 13646 transitions. [2021-11-13 18:16:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:16:29,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2021-11-13 18:16:29,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:16:29,502 INFO L225 Difference]: With dead ends: 9207 [2021-11-13 18:16:29,503 INFO L226 Difference]: Without dead ends: 6131 [2021-11-13 18:16:29,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:16:29,533 INFO L933 BasicCegarLoop]: 1887 mSDtfsCounter, 1533 mSDsluCounter, 9082 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 684.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 10969 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.68ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 811.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:16:29,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 10969 Invalid, 34 Unknown, 0 Unchecked, 36.68ms Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 811.71ms Time] [2021-11-13 18:16:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2021-11-13 18:16:29,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6131. [2021-11-13 18:16:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6131 states, 4827 states have (on average 1.4346384918168635) internal successors, (6925), 4857 states have internal predecessors, (6925), 1075 states have call successors, (1075), 229 states have call predecessors, (1075), 228 states have return successors, (1083), 1068 states have call predecessors, (1083), 1074 states have call successors, (1083) [2021-11-13 18:16:29,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6131 states to 6131 states and 9083 transitions. [2021-11-13 18:16:29,971 INFO L78 Accepts]: Start accepts. Automaton has 6131 states and 9083 transitions. Word has length 46 [2021-11-13 18:16:29,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:16:29,972 INFO L470 AbstractCegarLoop]: Abstraction has 6131 states and 9083 transitions. [2021-11-13 18:16:29,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:16:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6131 states and 9083 transitions. [2021-11-13 18:16:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 18:16:29,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:16:30,001 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-13 18:16:30,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:16:30,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:16:30,225 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:16:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:16:30,226 INFO L85 PathProgramCache]: Analyzing trace with hash -642422905, now seen corresponding path program 1 times [2021-11-13 18:16:30,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:16:30,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881997371] [2021-11-13 18:16:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:16:30,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:16:30,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:16:30,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:16:30,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:16:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:16:44,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:16:44,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:16:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:16:45,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:16:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-13 18:16:45,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:16:45,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881997371] [2021-11-13 18:16:45,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881997371] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:16:45,501 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:16:45,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:16:45,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139832908] [2021-11-13 18:16:45,502 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:16:45,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:16:45,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:16:45,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:16:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:16:45,505 INFO L87 Difference]: Start difference. First operand 6131 states and 9083 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:16:48,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:16:50,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:16:50,049 INFO L93 Difference]: Finished difference Result 11328 states and 16684 transitions. [2021-11-13 18:16:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:16:50,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 103 [2021-11-13 18:16:50,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:16:50,103 INFO L225 Difference]: With dead ends: 11328 [2021-11-13 18:16:50,103 INFO L226 Difference]: Without dead ends: 5209 [2021-11-13 18:16:50,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 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 18:16:50,133 INFO L933 BasicCegarLoop]: 1595 mSDtfsCounter, 338 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4122.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.66ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4303.79ms IncrementalHoareTripleChecker+Time [2021-11-13 18:16:50,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 3079 Invalid, 56 Unknown, 0 Unchecked, 11.66ms Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 1 Unknown, 0 Unchecked, 4303.79ms Time] [2021-11-13 18:16:50,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5209 states. [2021-11-13 18:16:50,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5209 to 5192. [2021-11-13 18:16:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5192 states, 4120 states have (on average 1.429126213592233) internal successors, (5888), 4142 states have internal predecessors, (5888), 851 states have call successors, (851), 221 states have call predecessors, (851), 220 states have return successors, (856), 844 states have call predecessors, (856), 850 states have call successors, (856) [2021-11-13 18:16:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 7595 transitions. [2021-11-13 18:16:50,417 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 7595 transitions. Word has length 103 [2021-11-13 18:16:50,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:16:50,420 INFO L470 AbstractCegarLoop]: Abstraction has 5192 states and 7595 transitions. [2021-11-13 18:16:50,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 18:16:50,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 7595 transitions. [2021-11-13 18:16:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-13 18:16:50,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:16:50,445 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:16:50,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:16:50,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:16:50,669 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:16:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:16:50,670 INFO L85 PathProgramCache]: Analyzing trace with hash 96929181, now seen corresponding path program 1 times [2021-11-13 18:16:50,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:16:50,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295138731] [2021-11-13 18:16:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:16:50,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:16:50,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:16:50,687 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:16:50,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:17:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:05,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:17:05,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:17:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-13 18:17:06,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:17:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-13 18:17:07,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:17:07,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295138731] [2021-11-13 18:17:07,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295138731] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:07,759 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:07,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 18:17:07,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316980808] [2021-11-13 18:17:07,760 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:07,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:17:07,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:17:07,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:17:07,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:17:07,762 INFO L87 Difference]: Start difference. First operand 5192 states and 7595 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-13 18:17:08,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:17:08,002 INFO L93 Difference]: Finished difference Result 10185 states and 14937 transitions. [2021-11-13 18:17:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:17:08,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 144 [2021-11-13 18:17:08,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:17:08,043 INFO L225 Difference]: With dead ends: 10185 [2021-11-13 18:17:08,044 INFO L226 Difference]: Without dead ends: 5222 [2021-11-13 18:17:08,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:17:08,065 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 2 mSDsluCounter, 4651 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6203 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.07ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:17:08,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6203 Invalid, 12 Unknown, 0 Unchecked, 14.07ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 70.56ms Time] [2021-11-13 18:17:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2021-11-13 18:17:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5212. [2021-11-13 18:17:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5212 states, 4134 states have (on average 1.4276729559748427) internal successors, (5902), 4158 states have internal predecessors, (5902), 851 states have call successors, (851), 221 states have call predecessors, (851), 226 states have return successors, (870), 848 states have call predecessors, (870), 850 states have call successors, (870) [2021-11-13 18:17:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5212 states to 5212 states and 7623 transitions. [2021-11-13 18:17:08,350 INFO L78 Accepts]: Start accepts. Automaton has 5212 states and 7623 transitions. Word has length 144 [2021-11-13 18:17:08,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:17:08,352 INFO L470 AbstractCegarLoop]: Abstraction has 5212 states and 7623 transitions. [2021-11-13 18:17:08,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-13 18:17:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5212 states and 7623 transitions. [2021-11-13 18:17:08,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-13 18:17:08,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:17:08,368 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:08,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:08,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:17:08,597 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:17:08,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:08,597 INFO L85 PathProgramCache]: Analyzing trace with hash 36910958, now seen corresponding path program 1 times [2021-11-13 18:17:08,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:17:08,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916996172] [2021-11-13 18:17:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:08,607 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:17:08,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:17:08,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:17:08,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:17:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:21,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 2134 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-13 18:17:21,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:17:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-13 18:17:22,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:17:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-13 18:17:26,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:17:26,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916996172] [2021-11-13 18:17:26,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916996172] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:26,304 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:26,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 14 [2021-11-13 18:17:26,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715681724] [2021-11-13 18:17:26,304 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:26,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:17:26,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:17:26,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:17:26,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:17:26,310 INFO L87 Difference]: Start difference. First operand 5212 states and 7623 transitions. Second operand has 14 states, 14 states have (on average 7.0) internal successors, (98), 10 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-13 18:17:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:17:31,368 INFO L93 Difference]: Finished difference Result 12880 states and 19213 transitions. [2021-11-13 18:17:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:17:31,376 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.0) internal successors, (98), 10 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 1 states have call successors, (15) Word has length 151 [2021-11-13 18:17:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:17:31,440 INFO L225 Difference]: With dead ends: 12880 [2021-11-13 18:17:31,441 INFO L226 Difference]: Without dead ends: 7897 [2021-11-13 18:17:31,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:17:31,460 INFO L933 BasicCegarLoop]: 2397 mSDtfsCounter, 817 mSDsluCounter, 23004 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4167.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 25401 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.51ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4280.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:17:31,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 25401 Invalid, 145 Unknown, 0 Unchecked, 51.51ms Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 4280.52ms Time] [2021-11-13 18:17:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2021-11-13 18:17:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 5236. [2021-11-13 18:17:31,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5236 states, 4152 states have (on average 1.4248554913294798) internal successors, (5916), 4174 states have internal predecessors, (5916), 851 states have call successors, (851), 221 states have call predecessors, (851), 232 states have return successors, (880), 856 states have call predecessors, (880), 850 states have call successors, (880) [2021-11-13 18:17:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 7647 transitions. [2021-11-13 18:17:31,796 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 7647 transitions. Word has length 151 [2021-11-13 18:17:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:17:31,798 INFO L470 AbstractCegarLoop]: Abstraction has 5236 states and 7647 transitions. [2021-11-13 18:17:31,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.0) internal successors, (98), 10 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 1 states have call successors, (15) [2021-11-13 18:17:31,799 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 7647 transitions. [2021-11-13 18:17:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:17:31,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:17:31,819 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:31,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:32,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:17:32,041 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:17:32,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:32,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1511771000, now seen corresponding path program 1 times [2021-11-13 18:17:32,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:17:32,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96003090] [2021-11-13 18:17:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:32,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:17:32,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:17:32,052 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:17:32,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:17:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:45,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2269 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:17:45,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:17:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-13 18:17:45,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:17:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-13 18:17:47,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:17:47,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96003090] [2021-11-13 18:17:47,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96003090] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:17:47,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:17:47,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-13 18:17:47,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945290783] [2021-11-13 18:17:47,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:47,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:17:47,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:17:47,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:17:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:17:47,054 INFO L87 Difference]: Start difference. First operand 5236 states and 7647 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-13 18:17:51,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:17:51,330 INFO L93 Difference]: Finished difference Result 12730 states and 18928 transitions. [2021-11-13 18:17:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:17:51,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 190 [2021-11-13 18:17:51,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:17:51,384 INFO L225 Difference]: With dead ends: 12730 [2021-11-13 18:17:51,384 INFO L226 Difference]: Without dead ends: 7723 [2021-11-13 18:17:51,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 371 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 18:17:51,403 INFO L933 BasicCegarLoop]: 2259 mSDtfsCounter, 770 mSDsluCounter, 8118 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3783.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 10377 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3907.80ms IncrementalHoareTripleChecker+Time [2021-11-13 18:17:51,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 10377 Invalid, 330 Unknown, 0 Unchecked, 23.68ms Time], IncrementalHoareTripleChecker [0 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 3907.80ms Time] [2021-11-13 18:17:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7723 states. [2021-11-13 18:17:51,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7723 to 5236. [2021-11-13 18:17:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5236 states, 4152 states have (on average 1.4238921001926783) internal successors, (5912), 4174 states have internal predecessors, (5912), 851 states have call successors, (851), 221 states have call predecessors, (851), 232 states have return successors, (880), 856 states have call predecessors, (880), 850 states have call successors, (880) [2021-11-13 18:17:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 7643 transitions. [2021-11-13 18:17:51,724 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 7643 transitions. Word has length 190 [2021-11-13 18:17:51,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:17:51,725 INFO L470 AbstractCegarLoop]: Abstraction has 5236 states and 7643 transitions. [2021-11-13 18:17:51,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-13 18:17:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 7643 transitions. [2021-11-13 18:17:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:17:51,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:17:51,742 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:51,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:51,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:17:51,965 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:17:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1944162634, now seen corresponding path program 1 times [2021-11-13 18:17:51,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:17:51,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554796792] [2021-11-13 18:17:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:51,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:17:51,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:17:51,977 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:17:51,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:18:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:04,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 2269 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:18:04,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-13 18:18:05,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-13 18:18:06,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:06,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554796792] [2021-11-13 18:18:06,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554796792] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:18:06,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:18:06,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-13 18:18:06,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940687310] [2021-11-13 18:18:06,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:06,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:18:06,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:06,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:18:06,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:18:06,349 INFO L87 Difference]: Start difference. First operand 5236 states and 7643 transitions. Second operand has 6 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-13 18:18:10,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:10,299 INFO L93 Difference]: Finished difference Result 12734 states and 18924 transitions. [2021-11-13 18:18:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:18:10,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 190 [2021-11-13 18:18:10,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:10,337 INFO L225 Difference]: With dead ends: 12734 [2021-11-13 18:18:10,338 INFO L226 Difference]: Without dead ends: 7727 [2021-11-13 18:18:10,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 371 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 18:18:10,356 INFO L933 BasicCegarLoop]: 2275 mSDtfsCounter, 762 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3503.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 10451 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3633.42ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:10,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 10451 Invalid, 331 Unknown, 0 Unchecked, 20.76ms Time], IncrementalHoareTripleChecker [0 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 3633.42ms Time] [2021-11-13 18:18:10,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7727 states. [2021-11-13 18:18:10,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7727 to 5236. [2021-11-13 18:18:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5236 states, 4152 states have (on average 1.4229287090558767) internal successors, (5908), 4174 states have internal predecessors, (5908), 851 states have call successors, (851), 221 states have call predecessors, (851), 232 states have return successors, (880), 856 states have call predecessors, (880), 850 states have call successors, (880) [2021-11-13 18:18:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 7639 transitions. [2021-11-13 18:18:10,680 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 7639 transitions. Word has length 190 [2021-11-13 18:18:10,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:10,681 INFO L470 AbstractCegarLoop]: Abstraction has 5236 states and 7639 transitions. [2021-11-13 18:18:10,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-13 18:18:10,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 7639 transitions. [2021-11-13 18:18:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:18:10,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:10,700 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:10,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:10,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:10,925 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1858178488, now seen corresponding path program 1 times [2021-11-13 18:18:10,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:10,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612705521] [2021-11-13 18:18:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:10,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:10,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:10,932 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:10,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:18:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:23,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 2269 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:18:23,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-13 18:18:24,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-13 18:18:25,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:25,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612705521] [2021-11-13 18:18:25,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612705521] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:18:25,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:18:25,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-13 18:18:25,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100752669] [2021-11-13 18:18:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:25,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:18:25,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:18:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:18:25,495 INFO L87 Difference]: Start difference. First operand 5236 states and 7639 transitions. Second operand has 6 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-13 18:18:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:27,931 INFO L93 Difference]: Finished difference Result 12950 states and 19266 transitions. [2021-11-13 18:18:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:18:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 190 [2021-11-13 18:18:27,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:27,969 INFO L225 Difference]: With dead ends: 12950 [2021-11-13 18:18:27,969 INFO L226 Difference]: Without dead ends: 7943 [2021-11-13 18:18:27,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 371 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 18:18:27,989 INFO L933 BasicCegarLoop]: 2354 mSDtfsCounter, 818 mSDsluCounter, 8425 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1999.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 10779 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2138.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:27,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 10779 Invalid, 350 Unknown, 0 Unchecked, 14.73ms Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 2138.72ms Time] [2021-11-13 18:18:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7943 states. [2021-11-13 18:18:28,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7943 to 5236. [2021-11-13 18:18:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5236 states, 4152 states have (on average 1.4219653179190752) internal successors, (5904), 4174 states have internal predecessors, (5904), 851 states have call successors, (851), 221 states have call predecessors, (851), 232 states have return successors, (880), 856 states have call predecessors, (880), 850 states have call successors, (880) [2021-11-13 18:18:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 7635 transitions. [2021-11-13 18:18:28,299 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 7635 transitions. Word has length 190 [2021-11-13 18:18:28,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:28,300 INFO L470 AbstractCegarLoop]: Abstraction has 5236 states and 7635 transitions. [2021-11-13 18:18:28,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-13 18:18:28,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 7635 transitions. [2021-11-13 18:18:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-13 18:18:28,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:28,317 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:28,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:28,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:28,541 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:28,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:28,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1757516554, now seen corresponding path program 1 times [2021-11-13 18:18:28,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:28,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942572250] [2021-11-13 18:18:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:28,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:28,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:28,552 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:28,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:18:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:41,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:41,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-13 18:18:41,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-13 18:18:42,203 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:42,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942572250] [2021-11-13 18:18:42,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942572250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:42,204 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:42,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:18:42,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137624319] [2021-11-13 18:18:42,204 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:42,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:18:42,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:18:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:42,206 INFO L87 Difference]: Start difference. First operand 5236 states and 7635 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 18:18:46,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:46,265 INFO L93 Difference]: Finished difference Result 17792 states and 26942 transitions. [2021-11-13 18:18:46,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:18:46,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 190 [2021-11-13 18:18:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:46,329 INFO L225 Difference]: With dead ends: 17792 [2021-11-13 18:18:46,329 INFO L226 Difference]: Without dead ends: 12785 [2021-11-13 18:18:46,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:18:46,347 INFO L933 BasicCegarLoop]: 2605 mSDtfsCounter, 2902 mSDsluCounter, 7597 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3324.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3109 SdHoareTripleChecker+Valid, 10202 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.80ms SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3539.63ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:46,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3109 Valid, 10202 Invalid, 402 Unknown, 0 Unchecked, 15.80ms Time], IncrementalHoareTripleChecker [288 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 3539.63ms Time] [2021-11-13 18:18:46,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12785 states. [2021-11-13 18:18:46,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12785 to 5244. [2021-11-13 18:18:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5244 states, 4160 states have (on average 1.4211538461538462) internal successors, (5912), 4182 states have internal predecessors, (5912), 851 states have call successors, (851), 221 states have call predecessors, (851), 232 states have return successors, (880), 856 states have call predecessors, (880), 850 states have call successors, (880) [2021-11-13 18:18:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5244 states to 5244 states and 7643 transitions. [2021-11-13 18:18:46,974 INFO L78 Accepts]: Start accepts. Automaton has 5244 states and 7643 transitions. Word has length 190 [2021-11-13 18:18:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:46,977 INFO L470 AbstractCegarLoop]: Abstraction has 5244 states and 7643 transitions. [2021-11-13 18:18:46,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 18:18:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 5244 states and 7643 transitions. [2021-11-13 18:18:47,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 18:18:47,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:47,008 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:47,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-13 18:18:47,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:47,221 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:18:47,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:47,221 INFO L85 PathProgramCache]: Analyzing trace with hash 632306147, now seen corresponding path program 1 times [2021-11-13 18:18:47,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:47,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962740697] [2021-11-13 18:18:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:47,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:47,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:47,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:47,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:18:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:59,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 2298 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:18:59,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-13 18:19:00,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-13 18:19:01,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:01,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962740697] [2021-11-13 18:19:01,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962740697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:01,027 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:01,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:19:01,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810166479] [2021-11-13 18:19:01,027 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:01,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:19:01,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:01,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:19:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:19:01,029 INFO L87 Difference]: Start difference. First operand 5244 states and 7643 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 18:19:03,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:19:03,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:03,429 INFO L93 Difference]: Finished difference Result 10263 states and 14978 transitions. [2021-11-13 18:19:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:19:03,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 200 [2021-11-13 18:19:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:03,474 INFO L225 Difference]: With dead ends: 10263 [2021-11-13 18:19:03,474 INFO L226 Difference]: Without dead ends: 5248 [2021-11-13 18:19:03,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 397 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 18:19:03,486 INFO L933 BasicCegarLoop]: 1550 mSDtfsCounter, 0 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2202.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2214.46ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:03,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3095 Invalid, 6 Unknown, 0 Unchecked, 3.68ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2214.46ms Time] [2021-11-13 18:19:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5248 states. [2021-11-13 18:19:03,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5248 to 5248. [2021-11-13 18:19:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 4164 states have (on average 1.420749279538905) internal successors, (5916), 4186 states have internal predecessors, (5916), 851 states have call successors, (851), 221 states have call predecessors, (851), 232 states have return successors, (880), 856 states have call predecessors, (880), 850 states have call successors, (880) [2021-11-13 18:19:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 7647 transitions. [2021-11-13 18:19:03,788 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 7647 transitions. Word has length 200 [2021-11-13 18:19:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:03,789 INFO L470 AbstractCegarLoop]: Abstraction has 5248 states and 7647 transitions. [2021-11-13 18:19:03,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 18:19:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 7647 transitions. [2021-11-13 18:19:03,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 18:19:03,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:03,805 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:03,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:04,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:04,021 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:04,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1848459873, now seen corresponding path program 1 times [2021-11-13 18:19:04,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:04,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17625470] [2021-11-13 18:19:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:04,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:04,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:04,030 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:04,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:19:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:16,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:19:16,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-13 18:19:16,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-13 18:19:17,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:17,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17625470] [2021-11-13 18:19:17,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17625470] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:19:17,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:19:17,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-13 18:19:17,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258271694] [2021-11-13 18:19:17,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:17,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:19:17,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:19:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:19:17,791 INFO L87 Difference]: Start difference. First operand 5248 states and 7647 transitions. Second operand has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 18:19:20,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:20,943 INFO L93 Difference]: Finished difference Result 13470 states and 20068 transitions. [2021-11-13 18:19:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:19:20,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 200 [2021-11-13 18:19:20,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:20,969 INFO L225 Difference]: With dead ends: 13470 [2021-11-13 18:19:20,969 INFO L226 Difference]: Without dead ends: 8451 [2021-11-13 18:19:21,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 391 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:19:21,063 INFO L933 BasicCegarLoop]: 2429 mSDtfsCounter, 794 mSDsluCounter, 8837 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2658.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 11266 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2809.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:21,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 11266 Invalid, 415 Unknown, 0 Unchecked, 14.25ms Time], IncrementalHoareTripleChecker [0 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 2809.59ms Time] [2021-11-13 18:19:21,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8451 states. [2021-11-13 18:19:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8451 to 5248. [2021-11-13 18:19:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 4164 states have (on average 1.4197886647454372) internal successors, (5912), 4186 states have internal predecessors, (5912), 851 states have call successors, (851), 221 states have call predecessors, (851), 232 states have return successors, (880), 856 states have call predecessors, (880), 850 states have call successors, (880) [2021-11-13 18:19:21,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 7643 transitions. [2021-11-13 18:19:21,407 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 7643 transitions. Word has length 200 [2021-11-13 18:19:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:21,408 INFO L470 AbstractCegarLoop]: Abstraction has 5248 states and 7643 transitions. [2021-11-13 18:19:21,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 18:19:21,409 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 7643 transitions. [2021-11-13 18:19:21,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 18:19:21,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:21,423 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:21,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:21,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:21,638 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2050283807, now seen corresponding path program 1 times [2021-11-13 18:19:21,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:21,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027253363] [2021-11-13 18:19:21,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:21,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:21,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:21,644 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:21,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:19:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:34,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:19:34,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-13 18:19:34,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-13 18:19:35,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:35,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027253363] [2021-11-13 18:19:35,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027253363] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:35,537 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:35,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-13 18:19:35,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981264748] [2021-11-13 18:19:35,537 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:35,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:19:35,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:35,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:19:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:19:35,539 INFO L87 Difference]: Start difference. First operand 5248 states and 7643 transitions. Second operand has 8 states, 6 states have (on average 25.0) internal successors, (150), 7 states have internal predecessors, (150), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-13 18:19:39,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:39,537 INFO L93 Difference]: Finished difference Result 12886 states and 19112 transitions. [2021-11-13 18:19:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:19:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 25.0) internal successors, (150), 7 states have internal predecessors, (150), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 200 [2021-11-13 18:19:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:39,570 INFO L225 Difference]: With dead ends: 12886 [2021-11-13 18:19:39,570 INFO L226 Difference]: Without dead ends: 7867 [2021-11-13 18:19:39,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 391 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:19:39,585 INFO L933 BasicCegarLoop]: 2310 mSDtfsCounter, 757 mSDsluCounter, 10560 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3337.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 12870 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.43ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 3468.61ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:39,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 12870 Invalid, 494 Unknown, 0 Unchecked, 19.43ms Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 0 Unknown, 127 Unchecked, 3468.61ms Time] [2021-11-13 18:19:39,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7867 states. [2021-11-13 18:19:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7867 to 5248. [2021-11-13 18:19:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 4164 states have (on average 1.4188280499519692) internal successors, (5908), 4186 states have internal predecessors, (5908), 851 states have call successors, (851), 221 states have call predecessors, (851), 232 states have return successors, (880), 856 states have call predecessors, (880), 850 states have call successors, (880) [2021-11-13 18:19:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 7639 transitions. [2021-11-13 18:19:39,959 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 7639 transitions. Word has length 200 [2021-11-13 18:19:39,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:39,960 INFO L470 AbstractCegarLoop]: Abstraction has 5248 states and 7639 transitions. [2021-11-13 18:19:39,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 25.0) internal successors, (150), 7 states have internal predecessors, (150), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-13 18:19:39,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 7639 transitions. [2021-11-13 18:19:39,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-13 18:19:39,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:39,975 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:40,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:40,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:40,197 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:19:40,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:40,197 INFO L85 PathProgramCache]: Analyzing trace with hash 21697697, now seen corresponding path program 1 times [2021-11-13 18:19:40,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:40,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693311293] [2021-11-13 18:19:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:40,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:40,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:40,206 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:40,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:19:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:52,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 18:19:52,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-13 18:19:54,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-13 18:19:58,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:58,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693311293] [2021-11-13 18:19:58,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693311293] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:58,551 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:58,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-13 18:19:58,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074301005] [2021-11-13 18:19:58,551 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:58,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 18:19:58,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:58,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 18:19:58,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:19:58,553 INFO L87 Difference]: Start difference. First operand 5248 states and 7639 transitions. Second operand has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 16 states have internal predecessors, (142), 4 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (24), 9 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-13 18:20:07,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:07,018 INFO L93 Difference]: Finished difference Result 16039 states and 24083 transitions. [2021-11-13 18:20:07,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:20:07,019 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 16 states have internal predecessors, (142), 4 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (24), 9 states have call predecessors, (24), 3 states have call successors, (24) Word has length 200 [2021-11-13 18:20:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:07,060 INFO L225 Difference]: With dead ends: 16039 [2021-11-13 18:20:07,060 INFO L226 Difference]: Without dead ends: 11020 [2021-11-13 18:20:07,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2021-11-13 18:20:07,078 INFO L933 BasicCegarLoop]: 3247 mSDtfsCounter, 1572 mSDsluCounter, 42833 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6719.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 46080 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.64ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6986.29ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:07,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 46080 Invalid, 336 Unknown, 0 Unchecked, 53.64ms Time], IncrementalHoareTripleChecker [4 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 6986.29ms Time] [2021-11-13 18:20:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11020 states. [2021-11-13 18:20:07,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11020 to 5256. [2021-11-13 18:20:07,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 4172 states have (on average 1.4180249280920423) internal successors, (5916), 4190 states have internal predecessors, (5916), 851 states have call successors, (851), 221 states have call predecessors, (851), 232 states have return successors, (880), 860 states have call predecessors, (880), 850 states have call successors, (880) [2021-11-13 18:20:07,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 7647 transitions. [2021-11-13 18:20:07,556 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 7647 transitions. Word has length 200 [2021-11-13 18:20:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:07,557 INFO L470 AbstractCegarLoop]: Abstraction has 5256 states and 7647 transitions. [2021-11-13 18:20:07,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.454545454545454) internal successors, (142), 16 states have internal predecessors, (142), 4 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (24), 9 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-13 18:20:07,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 7647 transitions. [2021-11-13 18:20:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-13 18:20:07,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:07,573 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:07,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:20:07,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:20:07,789 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:20:07,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:07,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1602293502, now seen corresponding path program 1 times [2021-11-13 18:20:07,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:20:07,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163412479] [2021-11-13 18:20:07,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:20:07,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:20:07,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:20:07,798 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:20:07,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c060822-24ed-46eb-b1da-41026b30010c/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process