./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.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_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/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_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/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_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/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 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:48:19,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:48:19,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:48:19,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:48:19,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:48:19,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:48:19,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:48:19,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:48:19,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:48:19,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:48:19,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:48:19,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:48:19,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:48:19,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:48:19,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:48:19,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:48:19,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:48:19,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:48:19,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:48:19,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:48:19,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:48:19,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:48:19,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:48:19,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:48:19,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:48:19,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:48:19,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:48:19,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:48:19,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:48:19,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:48:19,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:48:19,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:48:19,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:48:19,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:48:19,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:48:19,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:48:19,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:48:19,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:48:19,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:48:19,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:48:19,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:48:19,374 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:48:19,423 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:48:19,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:48:19,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:48:19,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:48:19,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:48:19,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:48:19,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:48:19,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:48:19,433 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:48:19,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:48:19,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:48:19,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:48:19,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:48:19,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:48:19,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:48:19,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:48:19,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:48:19,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:48:19,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:48:19,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:48:19,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:48:19,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:48:19,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:48:19,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:48:19,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:48:19,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:48:19,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:48:19,439 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:48:19,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:48:19,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:48:19,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:48:19,441 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_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2021-11-13 17:48:19,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:48:19,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:48:19,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:48:19,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:48:19,775 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:48:19,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-13 17:48:19,845 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/data/11e91d5cb/c76f5bba95724e28aa8ff02e2a7d8926/FLAG7c0c1129f [2021-11-13 17:48:20,869 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:48:20,870 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-13 17:48:20,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/data/11e91d5cb/c76f5bba95724e28aa8ff02e2a7d8926/FLAG7c0c1129f [2021-11-13 17:48:21,249 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/data/11e91d5cb/c76f5bba95724e28aa8ff02e2a7d8926 [2021-11-13 17:48:21,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:48:21,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:48:21,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:48:21,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:48:21,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:48:21,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:48:21" (1/1) ... [2021-11-13 17:48:21,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544cfa25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:21, skipping insertion in model container [2021-11-13 17:48:21,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:48:21" (1/1) ... [2021-11-13 17:48:21,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:48:21,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:48:23,429 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_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-11-13 17:48:23,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:48:23,520 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:48:23,935 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_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-11-13 17:48:23,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:48:24,145 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:48:24,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24 WrapperNode [2021-11-13 17:48:24,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:48:24,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:48:24,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:48:24,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:48:24,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (1/1) ... [2021-11-13 17:48:24,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (1/1) ... [2021-11-13 17:48:24,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:48:24,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:48:24,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:48:24,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:48:24,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (1/1) ... [2021-11-13 17:48:24,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (1/1) ... [2021-11-13 17:48:24,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (1/1) ... [2021-11-13 17:48:24,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (1/1) ... [2021-11-13 17:48:24,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (1/1) ... [2021-11-13 17:48:24,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (1/1) ... [2021-11-13 17:48:24,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (1/1) ... [2021-11-13 17:48:24,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:48:24,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:48:24,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:48:24,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:48:24,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (1/1) ... [2021-11-13 17:48:24,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:48:24,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:48:24,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:48:24,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:48:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-11-13 17:48:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-11-13 17:48:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-13 17:48:24,992 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-13 17:48:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:48:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:48:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 17:48:24,993 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 17:48:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-11-13 17:48:24,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-11-13 17:48:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:48:24,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:48:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 17:48:24,993 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 17:48:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset_after_host_error [2021-11-13 17:48:24,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset_after_host_error [2021-11-13 17:48:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 17:48:24,994 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 17:48:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-13 17:48:24,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-13 17:48:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:48:24,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:48:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 17:48:24,995 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 17:48:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-11-13 17:48:24,995 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-11-13 17:48:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-13 17:48:24,995 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-13 17:48:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:48:24,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:48:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-13 17:48:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-13 17:48:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-13 17:48:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-13 17:48:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2021-11-13 17:48:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2021-11-13 17:48:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 17:48:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 17:48:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-13 17:48:24,997 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-13 17:48:25,005 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-11-13 17:48:25,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-11-13 17:48:25,005 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-13 17:48:25,006 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-13 17:48:25,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:48:25,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:48:25,006 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 17:48:25,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 17:48:25,006 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 17:48:25,007 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 17:48:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-13 17:48:25,007 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-13 17:48:25,007 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-11-13 17:48:25,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-11-13 17:48:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-11-13 17:48:25,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-11-13 17:48:25,008 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-11-13 17:48:25,008 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-11-13 17:48:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:48:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 17:48:25,010 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 17:48:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-13 17:48:25,010 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-13 17:48:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-13 17:48:25,011 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-13 17:48:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:48:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 17:48:25,011 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 17:48:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 17:48:25,012 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 17:48:25,012 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-13 17:48:25,012 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-13 17:48:25,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-13 17:48:25,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-13 17:48:25,013 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-11-13 17:48:25,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-11-13 17:48:25,013 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-13 17:48:25,013 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-13 17:48:25,014 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-11-13 17:48:25,014 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-11-13 17:48:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:48:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:48:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-11-13 17:48:25,015 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-11-13 17:48:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-13 17:48:25,015 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-13 17:48:25,015 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 17:48:25,016 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 17:48:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 17:48:25,016 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 17:48:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:48:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-13 17:48:25,017 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-13 17:48:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 17:48:25,017 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 17:48:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-11-13 17:48:25,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-11-13 17:48:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-11-13 17:48:25,018 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-11-13 17:48:25,018 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-11-13 17:48:25,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-11-13 17:48:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:48:25,019 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioctl [2021-11-13 17:48:25,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioctl [2021-11-13 17:48:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-13 17:48:25,020 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-13 17:48:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:48:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 17:48:25,020 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 17:48:25,020 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 17:48:25,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 17:48:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:48:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:48:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 17:48:25,022 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 17:48:25,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 17:48:25,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 17:48:25,023 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-13 17:48:25,023 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-13 17:48:25,024 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-13 17:48:25,026 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-13 17:48:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:48:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 17:48:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 17:48:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-13 17:48:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-13 17:48:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-13 17:48:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-13 17:48:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:48:25,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:48:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-11-13 17:48:25,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-11-13 17:48:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 17:48:25,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 17:48:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-11-13 17:48:25,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-11-13 17:48:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:48:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-11-13 17:48:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-11-13 17:48:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 17:48:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 17:48:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-11-13 17:48:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-11-13 17:48:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 17:48:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 17:48:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:48:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 17:48:25,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 17:48:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-13 17:48:25,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-13 17:48:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-11-13 17:48:25,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-11-13 17:48:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-13 17:48:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-13 17:48:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-11-13 17:48:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-11-13 17:48:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-13 17:48:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-13 17:48:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 17:48:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 17:48:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-11-13 17:48:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-11-13 17:48:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-13 17:48:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-13 17:48:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-11-13 17:48:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-11-13 17:48:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-13 17:48:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-13 17:48:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_change_mtu [2021-11-13 17:48:25,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_change_mtu [2021-11-13 17:48:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 17:48:25,041 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 17:48:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:48:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-11-13 17:48:25,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-11-13 17:48:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-11-13 17:48:25,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-11-13 17:48:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-13 17:48:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-13 17:48:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:48:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:48:26,759 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:48:30,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:48:30,749 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 17:48:30,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:48:30 BoogieIcfgContainer [2021-11-13 17:48:30,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:48:30,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:48:30,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:48:30,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:48:30,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:48:21" (1/3) ... [2021-11-13 17:48:30,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d052c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:48:30, skipping insertion in model container [2021-11-13 17:48:30,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:48:24" (2/3) ... [2021-11-13 17:48:30,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d052c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:48:30, skipping insertion in model container [2021-11-13 17:48:30,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:48:30" (3/3) ... [2021-11-13 17:48:30,772 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-13 17:48:30,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:48:30,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:48:30,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:48:30,872 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:48:30,872 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:48:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) [2021-11-13 17:48:30,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 17:48:30,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:48:30,984 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:48:30,984 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:48:30,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:48:30,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1357410998, now seen corresponding path program 1 times [2021-11-13 17:48:31,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:48:31,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722716543] [2021-11-13 17:48:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:48:31,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:48:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:48:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:48:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:48:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:48:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:48:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:48:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 17:48:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 17:48:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-13 17:48:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:48:32,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:48:32,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722716543] [2021-11-13 17:48:32,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722716543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:48:32,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:48:32,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:48:32,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263699884] [2021-11-13 17:48:32,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:48:32,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:48:32,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:48:32,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:48:32,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:48:32,058 INFO L87 Difference]: Start difference. First operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 17:48:40,501 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 17:48:41,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:48:41,917 INFO L93 Difference]: Finished difference Result 2992 states and 4288 transitions. [2021-11-13 17:48:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:48:41,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2021-11-13 17:48:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:48:41,997 INFO L225 Difference]: With dead ends: 2992 [2021-11-13 17:48:41,997 INFO L226 Difference]: Without dead ends: 1590 [2021-11-13 17:48:42,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:48:42,019 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1036 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 1084 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8841.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.98ms SdHoareTripleChecker+Time, 1084 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9466.64ms IncrementalHoareTripleChecker+Time [2021-11-13 17:48:42,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 3224 Invalid, 2217 Unknown, 0 Unchecked, 54.98ms Time], IncrementalHoareTripleChecker [1084 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 9466.64ms Time] [2021-11-13 17:48:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-13 17:48:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1359. [2021-11-13 17:48:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 923 states have (on average 1.2838569880823403) internal successors, (1185), 945 states have internal predecessors, (1185), 354 states have call successors, (354), 82 states have call predecessors, (354), 81 states have return successors, (353), 353 states have call predecessors, (353), 353 states have call successors, (353) [2021-11-13 17:48:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1892 transitions. [2021-11-13 17:48:42,247 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1892 transitions. Word has length 121 [2021-11-13 17:48:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:48:42,247 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 1892 transitions. [2021-11-13 17:48:42,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 17:48:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1892 transitions. [2021-11-13 17:48:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 17:48:42,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:48:42,261 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:48:42,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:48:42,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:48:42,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:48:42,262 INFO L85 PathProgramCache]: Analyzing trace with hash -874608722, now seen corresponding path program 1 times [2021-11-13 17:48:42,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:48:42,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341279816] [2021-11-13 17:48:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:48:42,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:48:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:48:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:48:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:48:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:48:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:48:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:48:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:48:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:48:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 17:48:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 17:48:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-13 17:48:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:48:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:48:42,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:48:42,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341279816] [2021-11-13 17:48:42,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341279816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:48:42,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:48:42,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:48:42,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899159123] [2021-11-13 17:48:42,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:48:42,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:48:42,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:48:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:48:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:48:42,878 INFO L87 Difference]: Start difference. First operand 1359 states and 1892 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 17:48:58,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:48:59,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:48:59,793 INFO L93 Difference]: Finished difference Result 4502 states and 6412 transitions. [2021-11-13 17:48:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:48:59,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2021-11-13 17:48:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:48:59,823 INFO L225 Difference]: With dead ends: 4502 [2021-11-13 17:48:59,823 INFO L226 Difference]: Without dead ends: 3164 [2021-11-13 17:48:59,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:48:59,833 INFO L933 BasicCegarLoop]: 2043 mSDtfsCounter, 3668 mSDsluCounter, 6503 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 2424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14929.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3884 SdHoareTripleChecker+Valid, 8546 SdHoareTripleChecker+Invalid, 6223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.70ms SdHoareTripleChecker+Time, 2424 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16261.06ms IncrementalHoareTripleChecker+Time [2021-11-13 17:48:59,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3884 Valid, 8546 Invalid, 6223 Unknown, 0 Unchecked, 82.70ms Time], IncrementalHoareTripleChecker [2424 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 16261.06ms Time] [2021-11-13 17:48:59,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-11-13 17:49:00,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2724. [2021-11-13 17:49:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 1851 states have (on average 1.283090221501891) internal successors, (2375), 1897 states have internal predecessors, (2375), 706 states have call successors, (706), 163 states have call predecessors, (706), 166 states have return successors, (727), 707 states have call predecessors, (727), 705 states have call successors, (727) [2021-11-13 17:49:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3808 transitions. [2021-11-13 17:49:00,073 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3808 transitions. Word has length 121 [2021-11-13 17:49:00,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:49:00,076 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3808 transitions. [2021-11-13 17:49:00,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 17:49:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3808 transitions. [2021-11-13 17:49:00,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 17:49:00,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:49:00,087 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:49:00,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:49:00,087 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:49:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:49:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash -967648419, now seen corresponding path program 1 times [2021-11-13 17:49:00,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:49:00,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902371954] [2021-11-13 17:49:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:00,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:49:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:49:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:49:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:49:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:49:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:49:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:49:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 17:49:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:49:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-13 17:49:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:49:00,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:49:00,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902371954] [2021-11-13 17:49:00,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902371954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:49:00,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:49:00,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:49:00,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501833992] [2021-11-13 17:49:00,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:49:00,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:49:00,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:49:00,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:49:00,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:49:00,568 INFO L87 Difference]: Start difference. First operand 2724 states and 3808 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 17:49:08,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:11,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:49:11,305 INFO L93 Difference]: Finished difference Result 8937 states and 12794 transitions. [2021-11-13 17:49:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:49:11,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 122 [2021-11-13 17:49:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:49:11,360 INFO L225 Difference]: With dead ends: 8937 [2021-11-13 17:49:11,360 INFO L226 Difference]: Without dead ends: 6234 [2021-11-13 17:49:11,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:49:11,380 INFO L933 BasicCegarLoop]: 1977 mSDtfsCounter, 4732 mSDsluCounter, 5639 mSDsCounter, 0 mSdLazyCounter, 2965 mSolverCounterSat, 3451 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9170.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4943 SdHoareTripleChecker+Valid, 7616 SdHoareTripleChecker+Invalid, 6417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.73ms SdHoareTripleChecker+Time, 3451 IncrementalHoareTripleChecker+Valid, 2965 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10216.24ms IncrementalHoareTripleChecker+Time [2021-11-13 17:49:11,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4943 Valid, 7616 Invalid, 6417 Unknown, 0 Unchecked, 55.73ms Time], IncrementalHoareTripleChecker [3451 Valid, 2965 Invalid, 1 Unknown, 0 Unchecked, 10216.24ms Time] [2021-11-13 17:49:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-11-13 17:49:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 5413. [2021-11-13 17:49:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 3688 states have (on average 1.2838937093275489) internal successors, (4735), 3784 states have internal predecessors, (4735), 1389 states have call successors, (1389), 322 states have call predecessors, (1389), 335 states have return successors, (1498), 1394 states have call predecessors, (1498), 1388 states have call successors, (1498) [2021-11-13 17:49:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 7622 transitions. [2021-11-13 17:49:11,706 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 7622 transitions. Word has length 122 [2021-11-13 17:49:11,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:49:11,709 INFO L470 AbstractCegarLoop]: Abstraction has 5413 states and 7622 transitions. [2021-11-13 17:49:11,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 17:49:11,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 7622 transitions. [2021-11-13 17:49:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-13 17:49:11,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:49:11,713 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:49:11,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:49:11,714 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:49:11,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:49:11,715 INFO L85 PathProgramCache]: Analyzing trace with hash -292898560, now seen corresponding path program 1 times [2021-11-13 17:49:11,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:49:11,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360973090] [2021-11-13 17:49:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:11,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:49:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:11,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:49:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:11,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:11,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:49:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:11,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:11,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:49:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:11,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:49:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:12,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:12,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:12,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:49:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:49:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:12,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 17:49:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-13 17:49:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-13 17:49:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:49:12,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:49:12,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360973090] [2021-11-13 17:49:12,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360973090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:49:12,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:49:12,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:49:12,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110936127] [2021-11-13 17:49:12,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:49:12,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:49:12,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:49:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:49:12,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:49:12,143 INFO L87 Difference]: Start difference. First operand 5413 states and 7622 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 17:49:22,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:26,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:29,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:30,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:49:30,031 INFO L93 Difference]: Finished difference Result 17834 states and 25691 transitions. [2021-11-13 17:49:30,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:49:30,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 120 [2021-11-13 17:49:30,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:49:30,137 INFO L225 Difference]: With dead ends: 17834 [2021-11-13 17:49:30,137 INFO L226 Difference]: Without dead ends: 12442 [2021-11-13 17:49:30,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:49:30,172 INFO L933 BasicCegarLoop]: 2196 mSDtfsCounter, 4609 mSDsluCounter, 6055 mSDsCounter, 0 mSdLazyCounter, 3172 mSolverCounterSat, 3333 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16060.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4825 SdHoareTripleChecker+Valid, 8251 SdHoareTripleChecker+Invalid, 6506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.77ms SdHoareTripleChecker+Time, 3333 IncrementalHoareTripleChecker+Valid, 3172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17282.84ms IncrementalHoareTripleChecker+Time [2021-11-13 17:49:30,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4825 Valid, 8251 Invalid, 6506 Unknown, 0 Unchecked, 48.77ms Time], IncrementalHoareTripleChecker [3333 Valid, 3172 Invalid, 1 Unknown, 0 Unchecked, 17282.84ms Time] [2021-11-13 17:49:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12442 states. [2021-11-13 17:49:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12442 to 10771. [2021-11-13 17:49:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10771 states, 7334 states have (on average 1.283746932097082) internal successors, (9415), 7538 states have internal predecessors, (9415), 2767 states have call successors, (2767), 642 states have call predecessors, (2767), 669 states have return successors, (3074), 2766 states have call predecessors, (3074), 2766 states have call successors, (3074) [2021-11-13 17:49:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10771 states to 10771 states and 15256 transitions. [2021-11-13 17:49:30,880 INFO L78 Accepts]: Start accepts. Automaton has 10771 states and 15256 transitions. Word has length 120 [2021-11-13 17:49:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:49:30,881 INFO L470 AbstractCegarLoop]: Abstraction has 10771 states and 15256 transitions. [2021-11-13 17:49:30,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 17:49:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 10771 states and 15256 transitions. [2021-11-13 17:49:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 17:49:30,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:49:30,889 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:49:30,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:49:30,889 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:49:30,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:49:30,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1203194411, now seen corresponding path program 1 times [2021-11-13 17:49:30,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:49:30,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473594152] [2021-11-13 17:49:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:30,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:49:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:49:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:49:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:49:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:49:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:49:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:49:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 17:49:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:49:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:49:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:49:31,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:49:31,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473594152] [2021-11-13 17:49:31,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473594152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:49:31,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:49:31,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:49:31,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655258368] [2021-11-13 17:49:31,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:49:31,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:49:31,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:49:31,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:49:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:49:31,285 INFO L87 Difference]: Start difference. First operand 10771 states and 15256 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 17:49:39,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:49:42,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:49:42,842 INFO L93 Difference]: Finished difference Result 35077 states and 50741 transitions. [2021-11-13 17:49:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:49:42,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2021-11-13 17:49:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:49:43,007 INFO L225 Difference]: With dead ends: 35077 [2021-11-13 17:49:43,008 INFO L226 Difference]: Without dead ends: 24327 [2021-11-13 17:49:43,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:49:43,080 INFO L933 BasicCegarLoop]: 1962 mSDtfsCounter, 4795 mSDsluCounter, 5604 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 3533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9782.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5011 SdHoareTripleChecker+Valid, 7566 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.54ms SdHoareTripleChecker+Time, 3533 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10733.12ms IncrementalHoareTripleChecker+Time [2021-11-13 17:49:43,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5011 Valid, 7566 Invalid, 6515 Unknown, 0 Unchecked, 41.54ms Time], IncrementalHoareTripleChecker [3533 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 10733.12ms Time] [2021-11-13 17:49:43,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24327 states. [2021-11-13 17:49:44,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24327 to 21223. [2021-11-13 17:49:44,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21223 states, 14451 states have (on average 1.2819182063525016) internal successors, (18525), 14843 states have internal predecessors, (18525), 5441 states have call successors, (5441), 1275 states have call predecessors, (5441), 1330 states have return successors, (6246), 5444 states have call predecessors, (6246), 5440 states have call successors, (6246) [2021-11-13 17:49:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21223 states to 21223 states and 30212 transitions. [2021-11-13 17:49:44,474 INFO L78 Accepts]: Start accepts. Automaton has 21223 states and 30212 transitions. Word has length 123 [2021-11-13 17:49:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:49:44,476 INFO L470 AbstractCegarLoop]: Abstraction has 21223 states and 30212 transitions. [2021-11-13 17:49:44,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 17:49:44,476 INFO L276 IsEmpty]: Start isEmpty. Operand 21223 states and 30212 transitions. [2021-11-13 17:49:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-13 17:49:44,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:49:44,483 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:49:44,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:49:44,483 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:49:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:49:44,484 INFO L85 PathProgramCache]: Analyzing trace with hash 55159783, now seen corresponding path program 1 times [2021-11-13 17:49:44,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:49:44,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108584600] [2021-11-13 17:49:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:44,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:49:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:49:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:49:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:49:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:49:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:49:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:49:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:49:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 17:49:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:49:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-13 17:49:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-13 17:49:44,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:49:44,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108584600] [2021-11-13 17:49:44,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108584600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:49:44,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468964251] [2021-11-13 17:49:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:44,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:49:44,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:49:44,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:49:45,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:49:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:45,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:49:45,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:49:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:49:46,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:49:46,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468964251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:49:46,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:49:46,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-11-13 17:49:46,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301919743] [2021-11-13 17:49:46,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:49:46,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:49:46,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:49:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:49:46,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:49:46,328 INFO L87 Difference]: Start difference. First operand 21223 states and 30212 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:49:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:49:47,845 INFO L93 Difference]: Finished difference Result 53057 states and 75670 transitions. [2021-11-13 17:49:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:49:47,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 133 [2021-11-13 17:49:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:49:48,112 INFO L225 Difference]: With dead ends: 53057 [2021-11-13 17:49:48,113 INFO L226 Difference]: Without dead ends: 31855 [2021-11-13 17:49:48,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-11-13 17:49:48,188 INFO L933 BasicCegarLoop]: 2886 mSDtfsCounter, 1918 mSDsluCounter, 13408 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 16294 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.78ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.32ms IncrementalHoareTripleChecker+Time [2021-11-13 17:49:48,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 16294 Invalid, 76 Unknown, 0 Unchecked, 27.78ms Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 100.32ms Time] [2021-11-13 17:49:48,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31855 states. [2021-11-13 17:49:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31855 to 31706. [2021-11-13 17:49:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31706 states, 21599 states have (on average 1.2823741839899996) internal successors, (27698), 22191 states have internal predecessors, (27698), 8111 states have call successors, (8111), 1904 states have call predecessors, (8111), 1995 states have return successors, (9502), 8114 states have call predecessors, (9502), 8110 states have call successors, (9502) [2021-11-13 17:49:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31706 states to 31706 states and 45311 transitions. [2021-11-13 17:49:50,359 INFO L78 Accepts]: Start accepts. Automaton has 31706 states and 45311 transitions. Word has length 133 [2021-11-13 17:49:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:49:50,360 INFO L470 AbstractCegarLoop]: Abstraction has 31706 states and 45311 transitions. [2021-11-13 17:49:50,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:49:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 31706 states and 45311 transitions. [2021-11-13 17:49:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 17:49:50,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:49:50,369 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:49:50,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:49:50,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-13 17:49:50,585 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:49:50,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:49:50,586 INFO L85 PathProgramCache]: Analyzing trace with hash 484807700, now seen corresponding path program 1 times [2021-11-13 17:49:50,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:49:50,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358289668] [2021-11-13 17:49:50,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:50,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:49:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:49:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:49:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:49:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:49:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:49:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:49:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 17:49:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-13 17:49:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 17:49:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:49:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:49:51,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:49:51,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358289668] [2021-11-13 17:49:51,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358289668] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:49:51,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232499573] [2021-11-13 17:49:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:51,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:49:51,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:49:51,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:49:51,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:49:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:52,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 2098 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:49:52,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:49:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:49:52,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:49:52,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232499573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:49:52,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:49:52,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-13 17:49:52,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260594649] [2021-11-13 17:49:52,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:49:52,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:49:52,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:49:52,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:49:52,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:49:52,426 INFO L87 Difference]: Start difference. First operand 31706 states and 45311 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:49:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:49:53,865 INFO L93 Difference]: Finished difference Result 74076 states and 105914 transitions. [2021-11-13 17:49:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:49:53,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 134 [2021-11-13 17:49:53,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:49:54,129 INFO L225 Difference]: With dead ends: 74076 [2021-11-13 17:49:54,130 INFO L226 Difference]: Without dead ends: 42391 [2021-11-13 17:49:54,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:49:54,436 INFO L933 BasicCegarLoop]: 3013 mSDtfsCounter, 1918 mSDsluCounter, 13904 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 16917 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.30ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.01ms IncrementalHoareTripleChecker+Time [2021-11-13 17:49:54,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 16917 Invalid, 77 Unknown, 0 Unchecked, 20.30ms Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 78.01ms Time] [2021-11-13 17:49:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42391 states. [2021-11-13 17:49:56,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42391 to 42221. [2021-11-13 17:49:56,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42221 states, 28767 states have (on average 1.2824069246011054) internal successors, (36891), 29575 states have internal predecessors, (36891), 10781 states have call successors, (10781), 2533 states have call predecessors, (10781), 2672 states have return successors, (12770), 10780 states have call predecessors, (12770), 10780 states have call successors, (12770) [2021-11-13 17:49:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42221 states to 42221 states and 60442 transitions. [2021-11-13 17:49:56,756 INFO L78 Accepts]: Start accepts. Automaton has 42221 states and 60442 transitions. Word has length 134 [2021-11-13 17:49:56,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:49:56,756 INFO L470 AbstractCegarLoop]: Abstraction has 42221 states and 60442 transitions. [2021-11-13 17:49:56,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:49:56,757 INFO L276 IsEmpty]: Start isEmpty. Operand 42221 states and 60442 transitions. [2021-11-13 17:49:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-13 17:49:56,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:49:56,769 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:49:56,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:49:56,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-13 17:49:56,997 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:49:56,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:49:56,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1996562208, now seen corresponding path program 1 times [2021-11-13 17:49:56,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:49:56,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575632416] [2021-11-13 17:49:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:56,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:49:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:49:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:49:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:49:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:49:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:49:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:49:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:49:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:49:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 17:49:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 17:49:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 17:49:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-13 17:49:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:49:57,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:49:57,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575632416] [2021-11-13 17:49:57,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575632416] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:49:57,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160237504] [2021-11-13 17:49:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:49:57,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:49:57,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:49:57,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:49:57,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:49:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:49:58,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:49:58,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:49:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:49:58,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:49:58,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160237504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:49:58,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:49:58,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-13 17:49:58,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764472924] [2021-11-13 17:49:58,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:49:58,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:49:58,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:49:58,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:49:58,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:49:58,793 INFO L87 Difference]: Start difference. First operand 42221 states and 60442 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:50:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:00,610 INFO L93 Difference]: Finished difference Result 95095 states and 136158 transitions. [2021-11-13 17:50:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:50:00,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 135 [2021-11-13 17:50:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:00,910 INFO L225 Difference]: With dead ends: 95095 [2021-11-13 17:50:00,910 INFO L226 Difference]: Without dead ends: 52895 [2021-11-13 17:50:01,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:50:01,066 INFO L933 BasicCegarLoop]: 3013 mSDtfsCounter, 1918 mSDsluCounter, 13904 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 16917 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.66ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:01,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 16917 Invalid, 77 Unknown, 0 Unchecked, 19.81ms Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 72.66ms Time] [2021-11-13 17:50:01,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52895 states. [2021-11-13 17:50:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52895 to 42243. [2021-11-13 17:50:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42243 states, 28783 states have (on average 1.2822499392002225) internal successors, (36907), 29593 states have internal predecessors, (36907), 10781 states have call successors, (10781), 2533 states have call predecessors, (10781), 2678 states have return successors, (12779), 10784 states have call predecessors, (12779), 10780 states have call successors, (12779) [2021-11-13 17:50:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42243 states to 42243 states and 60467 transitions. [2021-11-13 17:50:03,143 INFO L78 Accepts]: Start accepts. Automaton has 42243 states and 60467 transitions. Word has length 135 [2021-11-13 17:50:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:03,143 INFO L470 AbstractCegarLoop]: Abstraction has 42243 states and 60467 transitions. [2021-11-13 17:50:03,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:50:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 42243 states and 60467 transitions. [2021-11-13 17:50:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-13 17:50:03,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:03,154 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:50:03,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:50:03,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:03,381 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:03,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:03,382 INFO L85 PathProgramCache]: Analyzing trace with hash -230204179, now seen corresponding path program 1 times [2021-11-13 17:50:03,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:03,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158500796] [2021-11-13 17:50:03,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:03,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:50:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:50:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:50:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:50:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:50:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:50:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-13 17:50:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:50:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-13 17:50:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:50:03,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:03,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158500796] [2021-11-13 17:50:03,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158500796] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:50:03,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841981264] [2021-11-13 17:50:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:03,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:03,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:50:03,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:50:03,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 17:50:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:04,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:50:04,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:50:04,878 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 17:50:04,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:50:04,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841981264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:04,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:50:04,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-13 17:50:04,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790837980] [2021-11-13 17:50:04,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:04,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:50:04,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:04,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:50:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:50:04,881 INFO L87 Difference]: Start difference. First operand 42243 states and 60467 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:50:06,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:06,861 INFO L93 Difference]: Finished difference Result 95125 states and 136191 transitions. [2021-11-13 17:50:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:50:06,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 136 [2021-11-13 17:50:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:07,097 INFO L225 Difference]: With dead ends: 95125 [2021-11-13 17:50:07,097 INFO L226 Difference]: Without dead ends: 52903 [2021-11-13 17:50:07,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:50:07,274 INFO L933 BasicCegarLoop]: 3013 mSDtfsCounter, 1918 mSDsluCounter, 13904 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 16917 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.93ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:07,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 16917 Invalid, 77 Unknown, 0 Unchecked, 22.33ms Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 96.93ms Time] [2021-11-13 17:50:07,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52903 states. [2021-11-13 17:50:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52903 to 42256. [2021-11-13 17:50:08,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42256 states, 28793 states have (on average 1.282151911923037) internal successors, (36917), 29602 states have internal predecessors, (36917), 10781 states have call successors, (10781), 2533 states have call predecessors, (10781), 2681 states have return successors, (12782), 10788 states have call predecessors, (12782), 10780 states have call successors, (12782) [2021-11-13 17:50:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42256 states to 42256 states and 60480 transitions. [2021-11-13 17:50:09,341 INFO L78 Accepts]: Start accepts. Automaton has 42256 states and 60480 transitions. Word has length 136 [2021-11-13 17:50:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:09,342 INFO L470 AbstractCegarLoop]: Abstraction has 42256 states and 60480 transitions. [2021-11-13 17:50:09,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 17:50:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 42256 states and 60480 transitions. [2021-11-13 17:50:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-13 17:50:09,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:09,356 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:50:09,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:50:09,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:09,581 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1071196633, now seen corresponding path program 1 times [2021-11-13 17:50:09,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:09,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351157635] [2021-11-13 17:50:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:09,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:50:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:50:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:50:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:50:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:50:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:50:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:50:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:50:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:10,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 17:50:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-13 17:50:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:10,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-13 17:50:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-13 17:50:10,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:10,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351157635] [2021-11-13 17:50:10,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351157635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:10,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:50:10,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:50:10,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708272121] [2021-11-13 17:50:10,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:10,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:50:10,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:10,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:50:10,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:50:10,034 INFO L87 Difference]: Start difference. First operand 42256 states and 60480 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 17:50:21,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:50:21,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:21,811 INFO L93 Difference]: Finished difference Result 58976 states and 84048 transitions. [2021-11-13 17:50:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:50:21,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2021-11-13 17:50:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:22,032 INFO L225 Difference]: With dead ends: 58976 [2021-11-13 17:50:22,032 INFO L226 Difference]: Without dead ends: 58973 [2021-11-13 17:50:22,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:50:22,057 INFO L933 BasicCegarLoop]: 1889 mSDtfsCounter, 2382 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 1476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9308.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.22ms SdHoareTripleChecker+Time, 1476 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10047.54ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:22,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2530 Valid, 4715 Invalid, 3695 Unknown, 0 Unchecked, 29.22ms Time], IncrementalHoareTripleChecker [1476 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 10047.54ms Time] [2021-11-13 17:50:22,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58973 states. [2021-11-13 17:50:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58973 to 52586. [2021-11-13 17:50:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52586 states, 35287 states have (on average 1.2647717289653413) internal successors, (44630), 36125 states have internal predecessors, (44630), 13560 states have call successors, (13560), 3590 states have call predecessors, (13560), 3738 states have return successors, (15561), 13567 states have call predecessors, (15561), 13559 states have call successors, (15561) [2021-11-13 17:50:24,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52586 states to 52586 states and 73751 transitions. [2021-11-13 17:50:24,356 INFO L78 Accepts]: Start accepts. Automaton has 52586 states and 73751 transitions. Word has length 159 [2021-11-13 17:50:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:24,361 INFO L470 AbstractCegarLoop]: Abstraction has 52586 states and 73751 transitions. [2021-11-13 17:50:24,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 17:50:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand 52586 states and 73751 transitions. [2021-11-13 17:50:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-13 17:50:24,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:24,404 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:50:24,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:50:24,404 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:24,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1871562796, now seen corresponding path program 1 times [2021-11-13 17:50:24,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:24,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89159000] [2021-11-13 17:50:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:24,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:50:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:50:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:50:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:50:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:50:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 17:50:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 17:50:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-13 17:50:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 17:50:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-13 17:50:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-13 17:50:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-13 17:50:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-13 17:50:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-13 17:50:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:50:24,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:24,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89159000] [2021-11-13 17:50:24,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89159000] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:50:24,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990876159] [2021-11-13 17:50:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:24,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:24,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:50:24,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:50:24,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 17:50:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:25,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 17:50:25,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:50:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-13 17:50:26,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:50:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-13 17:50:26,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990876159] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:50:26,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:50:26,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-11-13 17:50:26,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746832335] [2021-11-13 17:50:26,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:50:26,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 17:50:26,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 17:50:26,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:50:26,858 INFO L87 Difference]: Start difference. First operand 52586 states and 73751 transitions. Second operand has 24 states, 24 states have (on average 6.458333333333333) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-13 17:51:19,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:22,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:32,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:33,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:36,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:39,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:42,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:51:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:49,454 INFO L93 Difference]: Finished difference Result 155610 states and 221024 transitions. [2021-11-13 17:51:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-13 17:51:49,455 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.458333333333333) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) Word has length 182 [2021-11-13 17:51:49,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:50,107 INFO L225 Difference]: With dead ends: 155610 [2021-11-13 17:51:50,108 INFO L226 Difference]: Without dead ends: 102849 [2021-11-13 17:51:50,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 418 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7604 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3129, Invalid=17177, Unknown=0, NotChecked=0, Total=20306 [2021-11-13 17:51:50,259 INFO L933 BasicCegarLoop]: 3598 mSDtfsCounter, 20064 mSDsluCounter, 25557 mSDsCounter, 0 mSdLazyCounter, 44836 mSolverCounterSat, 19463 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64219.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20548 SdHoareTripleChecker+Valid, 29155 SdHoareTripleChecker+Invalid, 64301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 320.47ms SdHoareTripleChecker+Time, 19463 IncrementalHoareTripleChecker+Valid, 44836 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70523.37ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:50,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20548 Valid, 29155 Invalid, 64301 Unknown, 0 Unchecked, 320.47ms Time], IncrementalHoareTripleChecker [19463 Valid, 44836 Invalid, 2 Unknown, 0 Unchecked, 70523.37ms Time] [2021-11-13 17:51:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102849 states. [2021-11-13 17:51:55,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102849 to 90640. [2021-11-13 17:51:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90640 states, 60789 states have (on average 1.2639951306979882) internal successors, (76837), 62217 states have internal predecessors, (76837), 23429 states have call successors, (23429), 6199 states have call predecessors, (23429), 6421 states have return successors, (26654), 23407 states have call predecessors, (26654), 23428 states have call successors, (26654) [2021-11-13 17:51:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90640 states to 90640 states and 126920 transitions. [2021-11-13 17:51:55,562 INFO L78 Accepts]: Start accepts. Automaton has 90640 states and 126920 transitions. Word has length 182 [2021-11-13 17:51:55,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:55,562 INFO L470 AbstractCegarLoop]: Abstraction has 90640 states and 126920 transitions. [2021-11-13 17:51:55,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.458333333333333) internal successors, (155), 15 states have internal predecessors, (155), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-13 17:51:55,563 INFO L276 IsEmpty]: Start isEmpty. Operand 90640 states and 126920 transitions. [2021-11-13 17:51:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 17:51:55,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:55,604 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:51:55,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:55,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 17:51:55,817 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:55,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:55,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1627770104, now seen corresponding path program 1 times [2021-11-13 17:51:55,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:55,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553344085] [2021-11-13 17:51:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:55,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:55,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:51:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:51:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:51:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:51:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:51:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-13 17:51:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:51:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 17:51:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-13 17:51:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-13 17:51:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-13 17:51:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-13 17:51:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-13 17:51:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-13 17:51:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,303 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:51:56,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:56,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553344085] [2021-11-13 17:51:56,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553344085] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:56,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343894680] [2021-11-13 17:51:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:56,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:56,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:56,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:56,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 17:51:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:56,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 2341 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 17:51:56,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-13 17:51:57,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:51:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-13 17:51:58,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343894680] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:51:58,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:51:58,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-11-13 17:51:58,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672489866] [2021-11-13 17:51:58,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:51:58,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 17:51:58,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:58,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 17:51:58,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:51:58,412 INFO L87 Difference]: Start difference. First operand 90640 states and 126920 transitions. Second operand has 24 states, 24 states have (on average 6.541666666666667) internal successors, (157), 15 states have internal predecessors, (157), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-13 17:52:54,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:14,545 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:17,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:18,567 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:23,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:29,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:31,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:33,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:39,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:43,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:53:48,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:53:48,441 INFO L93 Difference]: Finished difference Result 262856 states and 371979 transitions. [2021-11-13 17:53:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-13 17:53:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.541666666666667) internal successors, (157), 15 states have internal predecessors, (157), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) Word has length 183 [2021-11-13 17:53:48,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:53:49,409 INFO L225 Difference]: With dead ends: 262856 [2021-11-13 17:53:49,409 INFO L226 Difference]: Without dead ends: 171915 [2021-11-13 17:53:49,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 420 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7763 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3129, Invalid=17177, Unknown=0, NotChecked=0, Total=20306 [2021-11-13 17:53:49,754 INFO L933 BasicCegarLoop]: 3224 mSDtfsCounter, 17909 mSDsluCounter, 23281 mSDsCounter, 0 mSdLazyCounter, 45683 mSolverCounterSat, 14933 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86722.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18392 SdHoareTripleChecker+Valid, 26505 SdHoareTripleChecker+Invalid, 60620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 374.98ms SdHoareTripleChecker+Time, 14933 IncrementalHoareTripleChecker+Valid, 45683 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93731.31ms IncrementalHoareTripleChecker+Time [2021-11-13 17:53:49,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18392 Valid, 26505 Invalid, 60620 Unknown, 0 Unchecked, 374.98ms Time], IncrementalHoareTripleChecker [14933 Valid, 45683 Invalid, 4 Unknown, 0 Unchecked, 93731.31ms Time] [2021-11-13 17:53:49,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171915 states. [2021-11-13 17:53:58,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171915 to 152024. [2021-11-13 17:53:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152024 states, 101838 states have (on average 1.2626917260747461) internal successors, (128590), 104173 states have internal predecessors, (128590), 39398 states have call successors, (39398), 10453 states have call predecessors, (39398), 10787 states have return successors, (44247), 39345 states have call predecessors, (44247), 39397 states have call successors, (44247) [2021-11-13 17:53:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152024 states to 152024 states and 212235 transitions. [2021-11-13 17:53:59,409 INFO L78 Accepts]: Start accepts. Automaton has 152024 states and 212235 transitions. Word has length 183 [2021-11-13 17:53:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:53:59,409 INFO L470 AbstractCegarLoop]: Abstraction has 152024 states and 212235 transitions. [2021-11-13 17:53:59,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.541666666666667) internal successors, (157), 15 states have internal predecessors, (157), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35) [2021-11-13 17:53:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 152024 states and 212235 transitions. [2021-11-13 17:53:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-13 17:53:59,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:53:59,450 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 17:53:59,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:53:59,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-13 17:53:59,665 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:53:59,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:53:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1159521531, now seen corresponding path program 1 times [2021-11-13 17:53:59,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:53:59,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679868646] [2021-11-13 17:53:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:53:59,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:53:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:59,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:53:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:59,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:53:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:59,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:53:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:53:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:53:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:53:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 17:53:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:53:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:54:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:54:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:54:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:54:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:54:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:54:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:54:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-13 17:54:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-13 17:54:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-13 17:54:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-13 17:54:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:54:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-13 17:54:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-13 17:54:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-13 17:54:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-13 17:54:00,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:54:00,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679868646] [2021-11-13 17:54:00,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679868646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:54:00,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366093128] [2021-11-13 17:54:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:54:00,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:54:00,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:54:00,289 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:54:00,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c90c035-d50a-4dc6-9395-06a6b1d7ef46/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 17:54:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:54:01,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 17:54:01,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:54:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-13 17:54:02,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:54:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-13 17:54:02,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366093128] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:54:02,676 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:54:02,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-11-13 17:54:02,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489218070] [2021-11-13 17:54:02,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:54:02,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 17:54:02,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:54:02,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 17:54:02,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:54:02,678 INFO L87 Difference]: Start difference. First operand 152024 states and 212235 transitions. Second operand has 24 states, 24 states have (on average 6.625) internal successors, (159), 15 states have internal predecessors, (159), 5 states have call successors, (43), 9 states have call predecessors, (43), 7 states have return successors, (35), 6 states have call predecessors, (35), 5 states have call successors, (35)