./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.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_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/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_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/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_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/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 8946ad2f029076f7c4f90de60a8c48e069f80fec06a0c6d7a5dc3a1fc4182879 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:21:19,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:21:19,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:21:19,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:21:19,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:21:19,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:21:19,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:21:19,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:21:19,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:21:19,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:21:19,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:21:19,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:21:19,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:21:19,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:21:19,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:21:19,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:21:19,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:21:19,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:21:19,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:21:19,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:21:19,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:21:19,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:21:19,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:21:19,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:21:19,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:21:19,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:21:19,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:21:19,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:21:19,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:21:19,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:21:19,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:21:19,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:21:19,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:21:19,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:21:19,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:21:19,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:21:19,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:21:19,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:21:19,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:21:19,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:21:19,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:21:19,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:21:19,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:21:19,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:21:19,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:21:19,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:21:19,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:21:19,509 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:21:19,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:21:19,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:21:19,521 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:21:19,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:21:19,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:21:19,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:21:19,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:21:19,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:21:19,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:21:19,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:21:19,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:21:19,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:21:19,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:21:19,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:21:19,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:21:19,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:21:19,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:21:19,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:21:19,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:21:19,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:21:19,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:21:19,529 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:21:19,529 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:21:19,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:21:19,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:21:19,531 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_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8946ad2f029076f7c4f90de60a8c48e069f80fec06a0c6d7a5dc3a1fc4182879 [2021-11-13 18:21:19,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:21:19,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:21:19,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:21:19,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:21:19,791 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:21:19,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:21:19,857 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/data/93d0d783b/b2c4288a26754fac96ef0d90ad13fd83/FLAG931401429 [2021-11-13 18:21:20,596 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:21:20,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:21:20,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/data/93d0d783b/b2c4288a26754fac96ef0d90ad13fd83/FLAG931401429 [2021-11-13 18:21:20,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/data/93d0d783b/b2c4288a26754fac96ef0d90ad13fd83 [2021-11-13 18:21:20,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:21:20,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:21:20,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:21:20,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:21:20,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:21:20,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:21:20" (1/1) ... [2021-11-13 18:21:20,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a961696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:20, skipping insertion in model container [2021-11-13 18:21:20,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:21:20" (1/1) ... [2021-11-13 18:21:20,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:21:20,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:21:21,944 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_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i[121503,121516] [2021-11-13 18:21:21,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:21:21,985 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:21:22,296 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_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i[121503,121516] [2021-11-13 18:21:22,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:21:22,363 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:21:22,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22 WrapperNode [2021-11-13 18:21:22,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:21:22,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:21:22,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:21:22,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:21:22,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (1/1) ... [2021-11-13 18:21:22,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (1/1) ... [2021-11-13 18:21:22,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:21:22,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:21:22,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:21:22,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:21:22,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (1/1) ... [2021-11-13 18:21:22,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (1/1) ... [2021-11-13 18:21:22,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (1/1) ... [2021-11-13 18:21:22,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (1/1) ... [2021-11-13 18:21:22,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (1/1) ... [2021-11-13 18:21:22,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (1/1) ... [2021-11-13 18:21:22,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (1/1) ... [2021-11-13 18:21:22,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:21:22,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:21:22,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:21:22,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:21:22,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (1/1) ... [2021-11-13 18:21:22,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:21:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:21:22,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:21:22,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:21:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2021-11-13 18:21:22,795 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2021-11-13 18:21:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-11-13 18:21:22,795 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-11-13 18:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:21:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:21:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2021-11-13 18:21:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2021-11-13 18:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2021-11-13 18:21:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2021-11-13 18:21:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:21:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:21:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2021-11-13 18:21:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2021-11-13 18:21:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2021-11-13 18:21:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2021-11-13 18:21:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:21:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:21:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:21:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:21:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:21:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:21:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:21:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2021-11-13 18:21:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2021-11-13 18:21:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 18:21:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 18:21:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:21:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:21:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:21:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 18:21:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 18:21:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:21:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:21:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-11-13 18:21:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-11-13 18:21:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:21:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:21:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:21:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:21:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2021-11-13 18:21:22,800 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2021-11-13 18:21:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2021-11-13 18:21:22,800 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2021-11-13 18:21:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:21:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-13 18:21:22,800 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-13 18:21:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 18:21:22,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 18:21:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:21:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:21:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-11-13 18:21:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-11-13 18:21:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2021-11-13 18:21:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2021-11-13 18:21:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:21:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:21:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:21:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 18:21:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 18:21:23,783 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:21:24,527 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:21:24,527 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:21:24,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:21:24 BoogieIcfgContainer [2021-11-13 18:21:24,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:21:24,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:21:24,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:21:24,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:21:24,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:21:20" (1/3) ... [2021-11-13 18:21:24,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2711fe68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:21:24, skipping insertion in model container [2021-11-13 18:21:24,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:21:22" (2/3) ... [2021-11-13 18:21:24,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2711fe68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:21:24, skipping insertion in model container [2021-11-13 18:21:24,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:21:24" (3/3) ... [2021-11-13 18:21:24,539 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:21:24,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:21:24,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:21:24,598 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:21:24,604 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:21:24,605 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:21:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 458 states, 347 states have (on average 1.2910662824207493) internal successors, (448), 359 states have internal predecessors, (448), 84 states have call successors, (84), 26 states have call predecessors, (84), 25 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2021-11-13 18:21:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:21:24,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:24,649 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:21:24,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:24,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:24,655 INFO L85 PathProgramCache]: Analyzing trace with hash -552855411, now seen corresponding path program 1 times [2021-11-13 18:21:24,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:24,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927716476] [2021-11-13 18:21:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:24,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:25,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:21:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:25,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:21:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:21:25,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:25,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927716476] [2021-11-13 18:21:25,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927716476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:21:25,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:21:25,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:21:25,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640376804] [2021-11-13 18:21:25,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:21:25,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:21:25,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:21:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:21:25,246 INFO L87 Difference]: Start difference. First operand has 458 states, 347 states have (on average 1.2910662824207493) internal successors, (448), 359 states have internal predecessors, (448), 84 states have call successors, (84), 26 states have call predecessors, (84), 25 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 18:21:27,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:27,403 INFO L93 Difference]: Finished difference Result 1516 states and 2132 transitions. [2021-11-13 18:21:27,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:21:27,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2021-11-13 18:21:27,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:27,430 INFO L225 Difference]: With dead ends: 1516 [2021-11-13 18:21:27,430 INFO L226 Difference]: Without dead ends: 1029 [2021-11-13 18:21:27,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:21:27,444 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 1103 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1614.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.34ms SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1883.36ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:27,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 1989 Invalid, 1440 Unknown, 0 Unchecked, 38.34ms Time], IncrementalHoareTripleChecker [535 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1883.36ms Time] [2021-11-13 18:21:27,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-11-13 18:21:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 836. [2021-11-13 18:21:27,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 641 states have (on average 1.2620904836193447) internal successors, (809), 650 states have internal predecessors, (809), 149 states have call successors, (149), 46 states have call predecessors, (149), 45 states have return successors, (147), 147 states have call predecessors, (147), 147 states have call successors, (147) [2021-11-13 18:21:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1105 transitions. [2021-11-13 18:21:27,615 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1105 transitions. Word has length 46 [2021-11-13 18:21:27,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:27,616 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1105 transitions. [2021-11-13 18:21:27,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 18:21:27,617 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1105 transitions. [2021-11-13 18:21:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-13 18:21:27,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:27,620 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:21:27,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:21:27,621 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash 95226783, now seen corresponding path program 1 times [2021-11-13 18:21:27,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:27,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140322504] [2021-11-13 18:21:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:27,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:27,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:27,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:27,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:21:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:27,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:21:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:21:27,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:27,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140322504] [2021-11-13 18:21:27,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140322504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:21:27,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:21:27,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:21:27,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810370154] [2021-11-13 18:21:27,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:21:27,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:21:27,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:27,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:21:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:21:27,829 INFO L87 Difference]: Start difference. First operand 836 states and 1105 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:21:29,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:29,256 INFO L93 Difference]: Finished difference Result 2018 states and 2763 transitions. [2021-11-13 18:21:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:21:29,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2021-11-13 18:21:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:29,275 INFO L225 Difference]: With dead ends: 2018 [2021-11-13 18:21:29,275 INFO L226 Difference]: Without dead ends: 2009 [2021-11-13 18:21:29,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:21:29,279 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 1366 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1000.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.70ms SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1220.86ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:29,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1443 Valid, 1426 Invalid, 1238 Unknown, 0 Unchecked, 18.70ms Time], IncrementalHoareTripleChecker [770 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 1220.86ms Time] [2021-11-13 18:21:29,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2021-11-13 18:21:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1633. [2021-11-13 18:21:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1254 states have (on average 1.2615629984051038) internal successors, (1582), 1271 states have internal predecessors, (1582), 289 states have call successors, (289), 90 states have call predecessors, (289), 89 states have return successors, (287), 287 states have call predecessors, (287), 287 states have call successors, (287) [2021-11-13 18:21:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2158 transitions. [2021-11-13 18:21:29,391 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2158 transitions. Word has length 49 [2021-11-13 18:21:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:29,392 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 2158 transitions. [2021-11-13 18:21:29,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:21:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2158 transitions. [2021-11-13 18:21:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-13 18:21:29,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:29,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:21:29,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:21:29,402 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:29,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:29,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1803513478, now seen corresponding path program 1 times [2021-11-13 18:21:29,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:29,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225131672] [2021-11-13 18:21:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:29,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:21:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:21:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-13 18:21:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 18:21:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 18:21:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:21:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 18:21:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-13 18:21:29,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:29,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225131672] [2021-11-13 18:21:29,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225131672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:21:29,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:21:29,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:21:29,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989749838] [2021-11-13 18:21:29,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:21:29,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:21:29,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:29,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:21:29,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:21:29,678 INFO L87 Difference]: Start difference. First operand 1633 states and 2158 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:21:31,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:31,942 INFO L93 Difference]: Finished difference Result 6006 states and 8246 transitions. [2021-11-13 18:21:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:21:31,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2021-11-13 18:21:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:31,983 INFO L225 Difference]: With dead ends: 6006 [2021-11-13 18:21:31,984 INFO L226 Difference]: Without dead ends: 4387 [2021-11-13 18:21:31,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:21:31,994 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 1710 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1492.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.24ms SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1819.57ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:31,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1798 Valid, 1716 Invalid, 1817 Unknown, 0 Unchecked, 27.24ms Time], IncrementalHoareTripleChecker [1115 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1819.57ms Time] [2021-11-13 18:21:32,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2021-11-13 18:21:32,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 3023. [2021-11-13 18:21:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3023 states, 2312 states have (on average 1.258650519031142) internal successors, (2910), 2345 states have internal predecessors, (2910), 535 states have call successors, (535), 176 states have call predecessors, (535), 175 states have return successors, (533), 533 states have call predecessors, (533), 533 states have call successors, (533) [2021-11-13 18:21:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 3978 transitions. [2021-11-13 18:21:32,210 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 3978 transitions. Word has length 110 [2021-11-13 18:21:32,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:32,211 INFO L470 AbstractCegarLoop]: Abstraction has 3023 states and 3978 transitions. [2021-11-13 18:21:32,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 18:21:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 3978 transitions. [2021-11-13 18:21:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-13 18:21:32,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:32,221 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:21:32,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:21:32,221 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:32,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:32,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1431908567, now seen corresponding path program 1 times [2021-11-13 18:21:32,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:32,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796001477] [2021-11-13 18:21:32,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:32,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:21:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:21:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:21:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 18:21:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 18:21:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:21:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-13 18:21:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 18:21:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 18:21:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-13 18:21:32,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:32,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796001477] [2021-11-13 18:21:32,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796001477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:21:32,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:21:32,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:21:32,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399672981] [2021-11-13 18:21:32,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:21:32,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:21:32,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:32,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:21:32,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:21:32,533 INFO L87 Difference]: Start difference. First operand 3023 states and 3978 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:21:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:34,208 INFO L93 Difference]: Finished difference Result 7395 states and 10067 transitions. [2021-11-13 18:21:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:21:34,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 153 [2021-11-13 18:21:34,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:34,259 INFO L225 Difference]: With dead ends: 7395 [2021-11-13 18:21:34,260 INFO L226 Difference]: Without dead ends: 4390 [2021-11-13 18:21:34,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:21:34,279 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 446 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1129.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.21ms SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1330.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:34,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 2430 Invalid, 1284 Unknown, 0 Unchecked, 23.21ms Time], IncrementalHoareTripleChecker [379 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1330.12ms Time] [2021-11-13 18:21:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2021-11-13 18:21:34,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 3026. [2021-11-13 18:21:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 2315 states have (on average 1.257451403887689) internal successors, (2911), 2348 states have internal predecessors, (2911), 535 states have call successors, (535), 176 states have call predecessors, (535), 175 states have return successors, (533), 533 states have call predecessors, (533), 533 states have call successors, (533) [2021-11-13 18:21:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 3979 transitions. [2021-11-13 18:21:34,557 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 3979 transitions. Word has length 153 [2021-11-13 18:21:34,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:34,558 INFO L470 AbstractCegarLoop]: Abstraction has 3026 states and 3979 transitions. [2021-11-13 18:21:34,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:21:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 3979 transitions. [2021-11-13 18:21:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-13 18:21:34,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:34,569 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:21:34,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:21:34,570 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:34,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2072432622, now seen corresponding path program 1 times [2021-11-13 18:21:34,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:34,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716592767] [2021-11-13 18:21:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:34,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:21:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:21:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 18:21:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:21:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:21:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 18:21:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:21:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 18:21:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-13 18:21:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-13 18:21:34,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:34,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716592767] [2021-11-13 18:21:34,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716592767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:21:34,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:21:34,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 18:21:34,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283155703] [2021-11-13 18:21:34,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:21:34,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:21:34,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:34,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:21:34,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:21:34,992 INFO L87 Difference]: Start difference. First operand 3026 states and 3979 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:21:36,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:36,940 INFO L93 Difference]: Finished difference Result 7388 states and 10051 transitions. [2021-11-13 18:21:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:21:36,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 154 [2021-11-13 18:21:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:36,987 INFO L225 Difference]: With dead ends: 7388 [2021-11-13 18:21:36,987 INFO L226 Difference]: Without dead ends: 4382 [2021-11-13 18:21:37,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:21:37,006 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 338 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1338.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.04ms SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1567.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:37,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 3155 Invalid, 1457 Unknown, 0 Unchecked, 25.04ms Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1567.89ms Time] [2021-11-13 18:21:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2021-11-13 18:21:37,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 3030. [2021-11-13 18:21:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 2317 states have (on average 1.2572291756581786) internal successors, (2913), 2352 states have internal predecessors, (2913), 535 states have call successors, (535), 176 states have call predecessors, (535), 177 states have return successors, (549), 533 states have call predecessors, (549), 533 states have call successors, (549) [2021-11-13 18:21:37,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3997 transitions. [2021-11-13 18:21:37,295 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3997 transitions. Word has length 154 [2021-11-13 18:21:37,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:37,297 INFO L470 AbstractCegarLoop]: Abstraction has 3030 states and 3997 transitions. [2021-11-13 18:21:37,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:21:37,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3997 transitions. [2021-11-13 18:21:37,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 18:21:37,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:37,307 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-11-13 18:21:37,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:21:37,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:37,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2085975844, now seen corresponding path program 1 times [2021-11-13 18:21:37,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:37,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634465267] [2021-11-13 18:21:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:37,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:21:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:21:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 18:21:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:21:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 18:21:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-13 18:21:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-13 18:21:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 18:21:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:21:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-13 18:21:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:21:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-13 18:21:37,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:37,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634465267] [2021-11-13 18:21:37,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634465267] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:21:37,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394994893] [2021-11-13 18:21:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:37,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:21:37,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:21:37,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:21:37,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:21:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:38,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:21:38,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:21:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-13 18:21:38,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:21:38,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394994893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:21:38,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:21:38,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-11-13 18:21:38,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45434975] [2021-11-13 18:21:38,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:21:38,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:21:38,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:38,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:21:38,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:21:38,699 INFO L87 Difference]: Start difference. First operand 3030 states and 3997 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 18:21:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:38,863 INFO L93 Difference]: Finished difference Result 6048 states and 7982 transitions. [2021-11-13 18:21:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:21:38,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2021-11-13 18:21:38,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:38,887 INFO L225 Difference]: With dead ends: 6048 [2021-11-13 18:21:38,887 INFO L226 Difference]: Without dead ends: 3031 [2021-11-13 18:21:38,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:21:38,902 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 3 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:38,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1726 Invalid, 11 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 13.83ms Time] [2021-11-13 18:21:38,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2021-11-13 18:21:39,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 3031. [2021-11-13 18:21:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 2318 states have (on average 1.2571182053494392) internal successors, (2914), 2353 states have internal predecessors, (2914), 535 states have call successors, (535), 176 states have call predecessors, (535), 177 states have return successors, (549), 533 states have call predecessors, (549), 533 states have call successors, (549) [2021-11-13 18:21:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 3998 transitions. [2021-11-13 18:21:39,131 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 3998 transitions. Word has length 175 [2021-11-13 18:21:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:39,131 INFO L470 AbstractCegarLoop]: Abstraction has 3031 states and 3998 transitions. [2021-11-13 18:21:39,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 18:21:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 3998 transitions. [2021-11-13 18:21:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-13 18:21:39,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:39,140 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:21:39,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:21:39,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:21:39,354 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:39,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:39,355 INFO L85 PathProgramCache]: Analyzing trace with hash -2062309340, now seen corresponding path program 1 times [2021-11-13 18:21:39,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:39,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265248152] [2021-11-13 18:21:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:39,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:21:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-13 18:21:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 18:21:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:21:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 18:21:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 18:21:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-13 18:21:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 18:21:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:21:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-13 18:21:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-13 18:21:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-13 18:21:39,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:39,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265248152] [2021-11-13 18:21:39,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265248152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:21:39,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285983908] [2021-11-13 18:21:39,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:39,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:21:39,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:21:39,810 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:21:39,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:21:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:40,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 18:21:40,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:21:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-13 18:21:40,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:21:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-13 18:21:41,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285983908] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:21:41,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:21:41,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 16 [2021-11-13 18:21:41,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630312684] [2021-11-13 18:21:41,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:21:41,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:21:41,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:41,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:21:41,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:21:41,385 INFO L87 Difference]: Start difference. First operand 3031 states and 3998 transitions. Second operand has 16 states, 16 states have (on average 8.0625) internal successors, (129), 12 states have internal predecessors, (129), 2 states have call successors, (38), 6 states have call predecessors, (38), 5 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 18:21:43,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:43,921 INFO L93 Difference]: Finished difference Result 7410 states and 10089 transitions. [2021-11-13 18:21:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:21:43,922 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.0625) internal successors, (129), 12 states have internal predecessors, (129), 2 states have call successors, (38), 6 states have call predecessors, (38), 5 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 177 [2021-11-13 18:21:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:43,977 INFO L225 Difference]: With dead ends: 7410 [2021-11-13 18:21:43,977 INFO L226 Difference]: Without dead ends: 4389 [2021-11-13 18:21:43,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2021-11-13 18:21:43,993 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 481 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1596.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.59ms SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1875.80ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:43,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 4338 Invalid, 1908 Unknown, 0 Unchecked, 26.59ms Time], IncrementalHoareTripleChecker [405 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1875.80ms Time] [2021-11-13 18:21:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2021-11-13 18:21:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 3041. [2021-11-13 18:21:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 2327 states have (on average 1.2565535023635583) internal successors, (2924), 2362 states have internal predecessors, (2924), 535 states have call successors, (535), 177 states have call predecessors, (535), 178 states have return successors, (549), 533 states have call predecessors, (549), 533 states have call successors, (549) [2021-11-13 18:21:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4008 transitions. [2021-11-13 18:21:44,279 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4008 transitions. Word has length 177 [2021-11-13 18:21:44,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:44,280 INFO L470 AbstractCegarLoop]: Abstraction has 3041 states and 4008 transitions. [2021-11-13 18:21:44,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.0625) internal successors, (129), 12 states have internal predecessors, (129), 2 states have call successors, (38), 6 states have call predecessors, (38), 5 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-13 18:21:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4008 transitions. [2021-11-13 18:21:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-13 18:21:44,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:44,291 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-11-13 18:21:44,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:21:44,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:21:44,509 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:44,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1611807748, now seen corresponding path program 2 times [2021-11-13 18:21:44,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:44,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141372528] [2021-11-13 18:21:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:44,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:21:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 18:21:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-13 18:21:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 18:21:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 18:21:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 18:21:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 18:21:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 18:21:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:21:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-13 18:21:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 18:21:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-13 18:21:45,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:45,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141372528] [2021-11-13 18:21:45,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141372528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:21:45,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130216600] [2021-11-13 18:21:45,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:21:45,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:21:45,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:21:45,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:21:45,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:21:45,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:21:45,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:21:45,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-13 18:21:45,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:21:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-13 18:21:46,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:21:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-13 18:21:46,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130216600] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:21:46,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:21:46,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 17 [2021-11-13 18:21:46,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857255841] [2021-11-13 18:21:46,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:21:46,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:21:46,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:46,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:21:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:21:46,765 INFO L87 Difference]: Start difference. First operand 3041 states and 4008 transitions. Second operand has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 13 states have internal predecessors, (132), 2 states have call successors, (39), 6 states have call predecessors, (39), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 18:21:49,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:21:49,400 INFO L93 Difference]: Finished difference Result 7417 states and 10095 transitions. [2021-11-13 18:21:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-13 18:21:49,400 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 13 states have internal predecessors, (132), 2 states have call successors, (39), 6 states have call predecessors, (39), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 181 [2021-11-13 18:21:49,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:21:49,445 INFO L225 Difference]: With dead ends: 7417 [2021-11-13 18:21:49,445 INFO L226 Difference]: Without dead ends: 4393 [2021-11-13 18:21:49,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-11-13 18:21:49,462 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 470 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1513.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.67ms SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1841.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:21:49,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 3333 Invalid, 1587 Unknown, 0 Unchecked, 22.67ms Time], IncrementalHoareTripleChecker [406 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 1841.74ms Time] [2021-11-13 18:21:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4393 states. [2021-11-13 18:21:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4393 to 3045. [2021-11-13 18:21:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 2331 states have (on average 1.2561132561132562) internal successors, (2928), 2366 states have internal predecessors, (2928), 535 states have call successors, (535), 177 states have call predecessors, (535), 178 states have return successors, (549), 533 states have call predecessors, (549), 533 states have call successors, (549) [2021-11-13 18:21:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 4012 transitions. [2021-11-13 18:21:49,757 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 4012 transitions. Word has length 181 [2021-11-13 18:21:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:21:49,759 INFO L470 AbstractCegarLoop]: Abstraction has 3045 states and 4012 transitions. [2021-11-13 18:21:49,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.764705882352941) internal successors, (132), 13 states have internal predecessors, (132), 2 states have call successors, (39), 6 states have call predecessors, (39), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 18:21:49,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 4012 transitions. [2021-11-13 18:21:49,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-13 18:21:49,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:21:49,779 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-11-13 18:21:49,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:21:50,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-13 18:21:50,004 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:21:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:21:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1177636028, now seen corresponding path program 3 times [2021-11-13 18:21:50,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:21:50,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036784981] [2021-11-13 18:21:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:21:50,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:21:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 18:21:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:21:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 18:21:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 18:21:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:21:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:21:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 18:21:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 18:21:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:21:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 18:21:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:21:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 18:21:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-13 18:21:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:21:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:21:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-13 18:21:50,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:21:50,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036784981] [2021-11-13 18:21:50,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036784981] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:21:50,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835218864] [2021-11-13 18:21:50,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:21:50,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:21:50,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:21:50,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:21:50,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:21:53,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-13 18:21:53,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:21:53,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 100 conjunts are in the unsatisfiable core [2021-11-13 18:21:53,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:21:53,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-13 18:21:53,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-13 18:21:53,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:53,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-13 18:21:53,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:53,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:53,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:53,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-13 18:21:54,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 45 [2021-11-13 18:21:54,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 18:21:54,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2021-11-13 18:21:54,322 INFO L354 Elim1Store]: treesize reduction 236, result has 15.7 percent of original size [2021-11-13 18:21:54,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 68 [2021-11-13 18:21:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 75 proven. 21 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-13 18:21:54,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:21:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-13 18:21:56,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835218864] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:21:56,646 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:21:56,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 14] total 35 [2021-11-13 18:21:56,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523243161] [2021-11-13 18:21:56,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:21:56,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-13 18:21:56,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:21:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-13 18:21:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 18:21:56,649 INFO L87 Difference]: Start difference. First operand 3045 states and 4012 transitions. Second operand has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 31 states have internal predecessors, (156), 3 states have call successors, (41), 6 states have call predecessors, (41), 5 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-13 18:22:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:07,037 INFO L93 Difference]: Finished difference Result 9601 states and 13137 transitions. [2021-11-13 18:22:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-13 18:22:07,038 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 31 states have internal predecessors, (156), 3 states have call successors, (41), 6 states have call predecessors, (41), 5 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 185 [2021-11-13 18:22:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:07,078 INFO L225 Difference]: With dead ends: 9601 [2021-11-13 18:22:07,079 INFO L226 Difference]: Without dead ends: 6571 [2021-11-13 18:22:07,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=837, Invalid=4275, Unknown=0, NotChecked=0, Total=5112 [2021-11-13 18:22:07,094 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 2166 mSDsluCounter, 6681 mSDsCounter, 0 mSdLazyCounter, 4435 mSolverCounterSat, 1024 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5398.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 7290 SdHoareTripleChecker+Invalid, 5459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.20ms SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 4435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6496.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:07,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2217 Valid, 7290 Invalid, 5459 Unknown, 0 Unchecked, 58.20ms Time], IncrementalHoareTripleChecker [1024 Valid, 4435 Invalid, 0 Unknown, 0 Unchecked, 6496.52ms Time] [2021-11-13 18:22:07,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2021-11-13 18:22:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 4524. [2021-11-13 18:22:07,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 3465 states have (on average 1.2585858585858587) internal successors, (4361), 3517 states have internal predecessors, (4361), 795 states have call successors, (795), 261 states have call predecessors, (795), 263 states have return successors, (817), 793 states have call predecessors, (817), 793 states have call successors, (817) [2021-11-13 18:22:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 5973 transitions. [2021-11-13 18:22:07,449 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 5973 transitions. Word has length 185 [2021-11-13 18:22:07,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:07,450 INFO L470 AbstractCegarLoop]: Abstraction has 4524 states and 5973 transitions. [2021-11-13 18:22:07,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 31 states have internal predecessors, (156), 3 states have call successors, (41), 6 states have call predecessors, (41), 5 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-13 18:22:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 5973 transitions. [2021-11-13 18:22:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-13 18:22:07,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:07,463 INFO L514 BasicCegarLoop]: trace histogram [12, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2021-11-13 18:22:07,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:07,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-13 18:22:07,672 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:07,673 INFO L85 PathProgramCache]: Analyzing trace with hash -53138148, now seen corresponding path program 4 times [2021-11-13 18:22:07,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:22:07,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943106351] [2021-11-13 18:22:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:07,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:22:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:22:07,976 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:22:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:22:08,641 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:22:08,641 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:22:08,642 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:22:08,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:22:08,648 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:08,651 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:22:08,706 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,707 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,707 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,707 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,708 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,709 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,709 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,709 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,709 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,710 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,710 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,710 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,710 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,711 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,711 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,711 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,711 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,712 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,712 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,712 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,712 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,713 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,713 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:08,713 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:08,713 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,714 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,714 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:08,714 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:08,715 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,715 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,716 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,717 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,717 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,717 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,718 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,718 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,718 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,718 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,719 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,719 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,719 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,719 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,720 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:08,720 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:08,720 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,720 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:08,720 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:08,721 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:08,770 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:22:08,777 INFO L158 Benchmark]: Toolchain (without parser) took 48071.27ms. Allocated memory was 111.1MB in the beginning and 545.3MB in the end (delta: 434.1MB). Free memory was 72.7MB in the beginning and 320.1MB in the end (delta: -247.4MB). Peak memory consumption was 356.6MB. Max. memory is 16.1GB. [2021-11-13 18:22:08,777 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:22:08,777 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1657.63ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 72.7MB in the beginning and 84.6MB in the end (delta: -11.9MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2021-11-13 18:22:08,778 INFO L158 Benchmark]: Boogie Procedure Inliner took 173.71ms. Allocated memory is still 138.4MB. Free memory was 84.6MB in the beginning and 74.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:22:08,778 INFO L158 Benchmark]: Boogie Preprocessor took 152.91ms. Allocated memory is still 138.4MB. Free memory was 74.1MB in the beginning and 64.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:22:08,779 INFO L158 Benchmark]: RCFGBuilder took 1835.95ms. Allocated memory was 138.4MB in the beginning and 230.7MB in the end (delta: 92.3MB). Free memory was 64.3MB in the beginning and 175.3MB in the end (delta: -111.1MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2021-11-13 18:22:08,779 INFO L158 Benchmark]: TraceAbstraction took 44243.91ms. Allocated memory was 230.7MB in the beginning and 545.3MB in the end (delta: 314.6MB). Free memory was 175.3MB in the beginning and 320.1MB in the end (delta: -144.7MB). Peak memory consumption was 340.9MB. Max. memory is 16.1GB. [2021-11-13 18:22:08,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 111.1MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1657.63ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 72.7MB in the beginning and 84.6MB in the end (delta: -11.9MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 173.71ms. Allocated memory is still 138.4MB. Free memory was 84.6MB in the beginning and 74.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 152.91ms. Allocated memory is still 138.4MB. Free memory was 74.1MB in the beginning and 64.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1835.95ms. Allocated memory was 138.4MB in the beginning and 230.7MB in the end (delta: 92.3MB). Free memory was 64.3MB in the beginning and 175.3MB in the end (delta: -111.1MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * TraceAbstraction took 44243.91ms. Allocated memory was 230.7MB in the beginning and 545.3MB in the end (delta: 314.6MB). Free memory was 175.3MB in the beginning and 320.1MB in the end (delta: -144.7MB). Peak memory consumption was 340.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:22:08,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/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_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/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 8946ad2f029076f7c4f90de60a8c48e069f80fec06a0c6d7a5dc3a1fc4182879 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:22:11,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:22:11,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:22:11,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:22:11,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:22:11,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:22:11,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:22:11,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:22:11,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:22:11,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:22:11,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:22:11,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:22:11,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:22:11,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:22:11,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:22:11,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:22:11,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:22:11,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:22:11,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:22:11,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:22:11,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:22:11,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:22:11,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:22:11,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:22:11,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:22:11,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:22:11,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:22:11,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:22:11,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:22:11,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:22:11,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:22:11,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:22:11,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:22:11,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:22:11,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:22:11,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:22:11,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:22:11,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:22:11,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:22:11,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:22:11,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:22:11,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-13 18:22:11,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:22:11,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:22:11,395 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:22:11,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:22:11,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:22:11,396 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:22:11,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:22:11,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:22:11,399 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:22:11,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:22:11,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:22:11,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:22:11,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:22:11,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:22:11,401 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:22:11,402 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:22:11,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:22:11,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:22:11,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:22:11,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:22:11,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:22:11,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:22:11,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:22:11,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:22:11,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:22:11,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:22:11,404 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:22:11,405 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:22:11,405 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:22:11,405 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:22:11,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:22:11,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:22:11,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:22:11,407 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8946ad2f029076f7c4f90de60a8c48e069f80fec06a0c6d7a5dc3a1fc4182879 [2021-11-13 18:22:11,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:22:11,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:22:11,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:22:11,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:22:11,812 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:22:11,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:22:11,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/data/5b90a9cbc/f6c8ade35632450a85797b975e57cc9f/FLAGf5c53560a [2021-11-13 18:22:12,773 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:22:12,774 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:22:12,818 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/data/5b90a9cbc/f6c8ade35632450a85797b975e57cc9f/FLAGf5c53560a [2021-11-13 18:22:13,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/data/5b90a9cbc/f6c8ade35632450a85797b975e57cc9f [2021-11-13 18:22:13,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:22:13,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:22:13,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:22:13,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:22:13,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:22:13,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:22:13" (1/1) ... [2021-11-13 18:22:13,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d879a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:13, skipping insertion in model container [2021-11-13 18:22:13,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:22:13" (1/1) ... [2021-11-13 18:22:13,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:22:13,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:22:14,526 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_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i[121503,121516] [2021-11-13 18:22:14,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:22:14,585 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:22:14,904 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_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i[121503,121516] [2021-11-13 18:22:14,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:22:14,998 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:22:14,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14 WrapperNode [2021-11-13 18:22:14,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:22:15,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:22:15,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:22:15,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:22:15,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (1/1) ... [2021-11-13 18:22:15,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (1/1) ... [2021-11-13 18:22:15,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:22:15,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:22:15,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:22:15,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:22:15,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (1/1) ... [2021-11-13 18:22:15,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (1/1) ... [2021-11-13 18:22:15,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (1/1) ... [2021-11-13 18:22:15,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (1/1) ... [2021-11-13 18:22:15,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (1/1) ... [2021-11-13 18:22:15,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (1/1) ... [2021-11-13 18:22:15,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (1/1) ... [2021-11-13 18:22:15,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:22:15,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:22:15,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:22:15,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:22:15,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (1/1) ... [2021-11-13 18:22:15,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:22:15,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:22:15,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:22:15,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:22:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2021-11-13 18:22:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2021-11-13 18:22:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:22:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 18:22:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:22:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-11-13 18:22:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-11-13 18:22:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 18:22:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:22:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:22:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:22:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:22:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-11-13 18:22:15,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-11-13 18:22:15,493 INFO L130 BoogieDeclarations]: Found specification of procedure req_get_ioprio [2021-11-13 18:22:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure req_get_ioprio [2021-11-13 18:22:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:22:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:22:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_free [2021-11-13 18:22:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_free [2021-11-13 18:22:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_buf [2021-11-13 18:22:15,494 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_buf [2021-11-13 18:22:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:22:15,495 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:22:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:22:15,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:22:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:22:15,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:22:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure index_to_minor [2021-11-13 18:22:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure index_to_minor [2021-11-13 18:22:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 18:22:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 18:22:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:22:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:22:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:22:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-13 18:22:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-13 18:22:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:22:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:22:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-11-13 18:22:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-11-13 18:22:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:22:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:22:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:22:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:22:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2021-11-13 18:22:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2021-11-13 18:22:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2021-11-13 18:22:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2021-11-13 18:22:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:22:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-13 18:22:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-13 18:22:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 18:22:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 18:22:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 18:22:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:22:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 18:22:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:22:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:22:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:22:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:22:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 18:22:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-11-13 18:22:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-11-13 18:22:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_ordered [2021-11-13 18:22:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_ordered [2021-11-13 18:22:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:22:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:22:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 18:22:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 18:22:17,206 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:22:19,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:22:19,256 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 18:22:19,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:22:19 BoogieIcfgContainer [2021-11-13 18:22:19,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:22:19,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:22:19,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:22:19,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:22:19,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:22:13" (1/3) ... [2021-11-13 18:22:19,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e790f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:22:19, skipping insertion in model container [2021-11-13 18:22:19,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:22:14" (2/3) ... [2021-11-13 18:22:19,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e790f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:22:19, skipping insertion in model container [2021-11-13 18:22:19,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:22:19" (3/3) ... [2021-11-13 18:22:19,271 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-39a1d13-1-101_1a-drivers--block--virtio_blk.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 18:22:19,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:22:19,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:22:19,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:22:19,364 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:22:19,368 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:22:19,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 457 states, 346 states have (on average 1.2919075144508672) internal successors, (447), 358 states have internal predecessors, (447), 84 states have call successors, (84), 26 states have call predecessors, (84), 25 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2021-11-13 18:22:19,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:22:19,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:19,417 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:22:19,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:19,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1119521097, now seen corresponding path program 1 times [2021-11-13 18:22:19,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:19,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45846695] [2021-11-13 18:22:19,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:19,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:19,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:19,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:19,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:22:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:19,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:22:19,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:22:20,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:22:20,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:20,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45846695] [2021-11-13 18:22:20,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45846695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:20,237 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:20,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:22:20,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841646592] [2021-11-13 18:22:20,239 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:20,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:22:20,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:20,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:22:20,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:22:20,287 INFO L87 Difference]: Start difference. First operand has 457 states, 346 states have (on average 1.2919075144508672) internal successors, (447), 358 states have internal predecessors, (447), 84 states have call successors, (84), 26 states have call predecessors, (84), 25 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:22:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:20,376 INFO L93 Difference]: Finished difference Result 909 states and 1235 transitions. [2021-11-13 18:22:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:22:20,379 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2021-11-13 18:22:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:20,397 INFO L225 Difference]: With dead ends: 909 [2021-11-13 18:22:20,397 INFO L226 Difference]: Without dead ends: 439 [2021-11-13 18:22:20,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:22:20,410 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:20,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 5.51ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:22:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-13 18:22:20,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-11-13 18:22:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 335 states have (on average 1.2597014925373133) internal successors, (422), 340 states have internal predecessors, (422), 79 states have call successors, (79), 25 states have call predecessors, (79), 24 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2021-11-13 18:22:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 578 transitions. [2021-11-13 18:22:20,499 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 578 transitions. Word has length 46 [2021-11-13 18:22:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:20,500 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 578 transitions. [2021-11-13 18:22:20,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:22:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 578 transitions. [2021-11-13 18:22:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:22:20,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:20,504 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:22:20,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:20,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:20,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:20,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:20,721 INFO L85 PathProgramCache]: Analyzing trace with hash 275515595, now seen corresponding path program 1 times [2021-11-13 18:22:20,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:20,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749790123] [2021-11-13 18:22:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:20,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:20,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:20,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:20,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:22:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:21,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:22:21,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:22:21,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:22:21,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:21,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749790123] [2021-11-13 18:22:21,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749790123] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:22:21,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:22:21,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-13 18:22:21,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892870090] [2021-11-13 18:22:21,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:21,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:22:21,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:21,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:22:21,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:22:21,590 INFO L87 Difference]: Start difference. First operand 439 states and 578 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:22:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:21,705 INFO L93 Difference]: Finished difference Result 876 states and 1154 transitions. [2021-11-13 18:22:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:22:21,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2021-11-13 18:22:21,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:21,713 INFO L225 Difference]: With dead ends: 876 [2021-11-13 18:22:21,713 INFO L226 Difference]: Without dead ends: 440 [2021-11-13 18:22:21,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:22:21,717 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 3 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.20ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:21,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1723 Invalid, 11 Unknown, 0 Unchecked, 12.55ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 39.20ms Time] [2021-11-13 18:22:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-13 18:22:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2021-11-13 18:22:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 336 states have (on average 1.2589285714285714) internal successors, (423), 341 states have internal predecessors, (423), 79 states have call successors, (79), 25 states have call predecessors, (79), 24 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2021-11-13 18:22:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 579 transitions. [2021-11-13 18:22:21,772 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 579 transitions. Word has length 46 [2021-11-13 18:22:21,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:21,773 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 579 transitions. [2021-11-13 18:22:21,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:22:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 579 transitions. [2021-11-13 18:22:21,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-13 18:22:21,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:21,776 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-13 18:22:21,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:21,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:21,998 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash 204883235, now seen corresponding path program 1 times [2021-11-13 18:22:22,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:22,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468664268] [2021-11-13 18:22:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:22,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:22,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:22,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:22,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:22:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:22,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:22:22,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:22:22,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:22:22,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:22,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468664268] [2021-11-13 18:22:22,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468664268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:22,957 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:22:22,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 18:22:22,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099593867] [2021-11-13 18:22:22,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:22,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:22:22,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:22,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:22:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:22:22,960 INFO L87 Difference]: Start difference. First operand 440 states and 579 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:22:23,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:23,385 INFO L93 Difference]: Finished difference Result 887 states and 1169 transitions. [2021-11-13 18:22:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 18:22:23,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2021-11-13 18:22:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:23,393 INFO L225 Difference]: With dead ends: 887 [2021-11-13 18:22:23,394 INFO L226 Difference]: Without dead ends: 450 [2021-11-13 18:22:23,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:22:23,401 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 15 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.83ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:23,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1726 Invalid, 47 Unknown, 0 Unchecked, 14.83ms Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 179.43ms Time] [2021-11-13 18:22:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-13 18:22:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2021-11-13 18:22:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 345 states have (on average 1.2608695652173914) internal successors, (435), 350 states have internal predecessors, (435), 79 states have call successors, (79), 26 states have call predecessors, (79), 25 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2021-11-13 18:22:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 591 transitions. [2021-11-13 18:22:23,452 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 591 transitions. Word has length 48 [2021-11-13 18:22:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:23,453 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 591 transitions. [2021-11-13 18:22:23,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:22:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 591 transitions. [2021-11-13 18:22:23,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-13 18:22:23,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:23,465 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2021-11-13 18:22:23,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:23,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:23,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:23,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:23,679 INFO L85 PathProgramCache]: Analyzing trace with hash 647289995, now seen corresponding path program 2 times [2021-11-13 18:22:23,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:23,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186165650] [2021-11-13 18:22:23,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:22:23,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:23,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:23,682 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:23,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:22:24,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:22:24,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:22:24,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:22:24,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 18:22:24,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 18:22:24,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:24,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186165650] [2021-11-13 18:22:24,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186165650] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:24,327 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:24,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:22:24,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534764500] [2021-11-13 18:22:24,328 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:24,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:22:24,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:24,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:22:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:22:24,330 INFO L87 Difference]: Start difference. First operand 450 states and 591 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 18:22:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:25,861 INFO L93 Difference]: Finished difference Result 1680 states and 2220 transitions. [2021-11-13 18:22:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:22:25,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2021-11-13 18:22:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:25,875 INFO L225 Difference]: With dead ends: 1680 [2021-11-13 18:22:25,875 INFO L226 Difference]: Without dead ends: 1255 [2021-11-13 18:22:25,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:22:25,879 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 1457 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1223.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.08ms SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1415.82ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:25,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1457 Valid, 1662 Invalid, 320 Unknown, 0 Unchecked, 13.08ms Time], IncrementalHoareTripleChecker [150 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1415.82ms Time] [2021-11-13 18:22:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-11-13 18:22:25,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1249. [2021-11-13 18:22:25,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 958 states have (on average 1.2640918580375784) internal successors, (1211), 971 states have internal predecessors, (1211), 221 states have call successors, (221), 70 states have call predecessors, (221), 69 states have return successors, (219), 219 states have call predecessors, (219), 219 states have call successors, (219) [2021-11-13 18:22:25,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1651 transitions. [2021-11-13 18:22:25,999 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1651 transitions. Word has length 52 [2021-11-13 18:22:26,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:26,001 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1651 transitions. [2021-11-13 18:22:26,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 18:22:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1651 transitions. [2021-11-13 18:22:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 18:22:26,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:26,009 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2021-11-13 18:22:26,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:26,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:26,224 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:26,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1975753054, now seen corresponding path program 1 times [2021-11-13 18:22:26,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:26,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498288583] [2021-11-13 18:22:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:26,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:26,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:26,227 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:26,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:22:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:26,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:22:26,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 18:22:26,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:22:27,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:27,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498288583] [2021-11-13 18:22:27,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498288583] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:27,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:22:27,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-13 18:22:27,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57990598] [2021-11-13 18:22:27,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:27,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:22:27,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:27,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:22:27,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:22:27,787 INFO L87 Difference]: Start difference. First operand 1249 states and 1651 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:22:28,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:28,681 INFO L93 Difference]: Finished difference Result 2491 states and 3298 transitions. [2021-11-13 18:22:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 18:22:28,682 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2021-11-13 18:22:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:28,695 INFO L225 Difference]: With dead ends: 2491 [2021-11-13 18:22:28,695 INFO L226 Difference]: Without dead ends: 1261 [2021-11-13 18:22:28,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:22:28,702 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 42 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 351.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 4035 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.78ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 416.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:28,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 4035 Invalid, 158 Unknown, 0 Unchecked, 13.78ms Time], IncrementalHoareTripleChecker [25 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 416.12ms Time] [2021-11-13 18:22:28,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2021-11-13 18:22:28,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1255. [2021-11-13 18:22:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 964 states have (on average 1.2634854771784232) internal successors, (1218), 977 states have internal predecessors, (1218), 221 states have call successors, (221), 70 states have call predecessors, (221), 69 states have return successors, (219), 219 states have call predecessors, (219), 219 states have call successors, (219) [2021-11-13 18:22:28,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1658 transitions. [2021-11-13 18:22:28,779 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1658 transitions. Word has length 55 [2021-11-13 18:22:28,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:28,779 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1658 transitions. [2021-11-13 18:22:28,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:22:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1658 transitions. [2021-11-13 18:22:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 18:22:28,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:28,781 INFO L514 BasicCegarLoop]: trace histogram [10, 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] [2021-11-13 18:22:28,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:28,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:28,997 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1015347678, now seen corresponding path program 2 times [2021-11-13 18:22:28,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:28,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039165643] [2021-11-13 18:22:28,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:22:28,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:28,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:29,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:29,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:22:29,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:22:29,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:22:29,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:22:29,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-13 18:22:29,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-13 18:22:29,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:29,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039165643] [2021-11-13 18:22:29,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039165643] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:29,704 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:29,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-13 18:22:29,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663576777] [2021-11-13 18:22:29,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:29,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:22:29,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:22:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:29,707 INFO L87 Difference]: Start difference. First operand 1255 states and 1658 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 18:22:29,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:29,821 INFO L93 Difference]: Finished difference Result 2445 states and 3236 transitions. [2021-11-13 18:22:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:22:29,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 59 [2021-11-13 18:22:29,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:29,843 INFO L225 Difference]: With dead ends: 2445 [2021-11-13 18:22:29,843 INFO L226 Difference]: Without dead ends: 2436 [2021-11-13 18:22:29,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:29,846 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 529 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.56ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.75ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:29,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1207 Invalid, 6 Unknown, 0 Unchecked, 5.56ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 6.75ms Time] [2021-11-13 18:22:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-11-13 18:22:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2436. [2021-11-13 18:22:29,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 1872 states have (on average 1.2638888888888888) internal successors, (2366), 1897 states have internal predecessors, (2366), 429 states have call successors, (429), 135 states have call predecessors, (429), 134 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) [2021-11-13 18:22:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3222 transitions. [2021-11-13 18:22:30,006 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3222 transitions. Word has length 59 [2021-11-13 18:22:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:30,006 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3222 transitions. [2021-11-13 18:22:30,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 18:22:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3222 transitions. [2021-11-13 18:22:30,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-13 18:22:30,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:30,012 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:30,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:30,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:30,228 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:30,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:30,228 INFO L85 PathProgramCache]: Analyzing trace with hash -636118632, now seen corresponding path program 1 times [2021-11-13 18:22:30,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:30,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682677667] [2021-11-13 18:22:30,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:30,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:30,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:30,231 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:30,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:22:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:30,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:22:30,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-13 18:22:31,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-13 18:22:31,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:31,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682677667] [2021-11-13 18:22:31,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682677667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:22:31,695 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:22:31,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:22:31,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314186525] [2021-11-13 18:22:31,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:22:31,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:22:31,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:22:31,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:22:31,696 INFO L87 Difference]: Start difference. First operand 2436 states and 3222 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 18:22:32,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:32,073 INFO L93 Difference]: Finished difference Result 4838 states and 6404 transitions. [2021-11-13 18:22:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:22:32,074 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 120 [2021-11-13 18:22:32,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:32,094 INFO L225 Difference]: With dead ends: 4838 [2021-11-13 18:22:32,095 INFO L226 Difference]: Without dead ends: 2436 [2021-11-13 18:22:32,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:22:32,106 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 21 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.72ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:32,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 2869 Invalid, 58 Unknown, 0 Unchecked, 8.72ms Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 153.51ms Time] [2021-11-13 18:22:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2021-11-13 18:22:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2436. [2021-11-13 18:22:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 1872 states have (on average 1.2617521367521367) internal successors, (2362), 1897 states have internal predecessors, (2362), 429 states have call successors, (429), 135 states have call predecessors, (429), 134 states have return successors, (427), 427 states have call predecessors, (427), 427 states have call successors, (427) [2021-11-13 18:22:32,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3218 transitions. [2021-11-13 18:22:32,271 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3218 transitions. Word has length 120 [2021-11-13 18:22:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:32,272 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3218 transitions. [2021-11-13 18:22:32,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 18:22:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3218 transitions. [2021-11-13 18:22:32,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 18:22:32,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:32,277 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:32,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:32,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:32,498 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1966175016, now seen corresponding path program 2 times [2021-11-13 18:22:32,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:32,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694301550] [2021-11-13 18:22:32,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:22:32,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:32,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:32,501 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:32,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:22:33,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:22:33,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:22:33,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:22:33,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-13 18:22:34,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-13 18:22:34,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:34,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694301550] [2021-11-13 18:22:34,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694301550] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:34,310 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:34,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:22:34,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601519180] [2021-11-13 18:22:34,311 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:34,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:22:34,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:34,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:22:34,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:34,313 INFO L87 Difference]: Start difference. First operand 2436 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 18:22:34,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:34,598 INFO L93 Difference]: Finished difference Result 6897 states and 9108 transitions. [2021-11-13 18:22:34,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:22:34,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 122 [2021-11-13 18:22:34,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:34,634 INFO L225 Difference]: With dead ends: 6897 [2021-11-13 18:22:34,634 INFO L226 Difference]: Without dead ends: 4502 [2021-11-13 18:22:34,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:22:34,646 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 485 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.83ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:34,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 1206 Invalid, 11 Unknown, 0 Unchecked, 4.83ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 67.74ms Time] [2021-11-13 18:22:34,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2021-11-13 18:22:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 4494. [2021-11-13 18:22:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 3438 states have (on average 1.2600349040139616) internal successors, (4332), 3487 states have internal predecessors, (4332), 795 states have call successors, (795), 261 states have call predecessors, (795), 260 states have return successors, (793), 793 states have call predecessors, (793), 793 states have call successors, (793) [2021-11-13 18:22:34,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 5920 transitions. [2021-11-13 18:22:34,906 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 5920 transitions. Word has length 122 [2021-11-13 18:22:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:34,906 INFO L470 AbstractCegarLoop]: Abstraction has 4494 states and 5920 transitions. [2021-11-13 18:22:34,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 18:22:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 5920 transitions. [2021-11-13 18:22:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-13 18:22:34,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:34,918 INFO L514 BasicCegarLoop]: trace histogram [12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:34,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:35,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:35,138 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:35,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:35,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1914519532, now seen corresponding path program 1 times [2021-11-13 18:22:35,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:35,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79423528] [2021-11-13 18:22:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:35,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:35,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:35,142 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:35,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:22:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:35,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:22:35,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-13 18:22:36,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-13 18:22:36,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:36,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79423528] [2021-11-13 18:22:36,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79423528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:36,601 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:36,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:22:36,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668491699] [2021-11-13 18:22:36,603 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:36,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:22:36,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:22:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:22:36,605 INFO L87 Difference]: Start difference. First operand 4494 states and 5920 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 18:22:37,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:37,145 INFO L93 Difference]: Finished difference Result 7848 states and 10343 transitions. [2021-11-13 18:22:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:22:37,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 165 [2021-11-13 18:22:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:37,175 INFO L225 Difference]: With dead ends: 7848 [2021-11-13 18:22:37,175 INFO L226 Difference]: Without dead ends: 3387 [2021-11-13 18:22:37,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:22:37,200 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 20 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 334.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.89ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 350.19ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:37,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2308 Invalid, 23 Unknown, 0 Unchecked, 5.89ms Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 350.19ms Time] [2021-11-13 18:22:37,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2021-11-13 18:22:37,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 3362. [2021-11-13 18:22:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 2568 states have (on average 1.2581775700934579) internal successors, (3231), 2605 states have internal predecessors, (3231), 596 states have call successors, (596), 198 states have call predecessors, (596), 197 states have return successors, (594), 594 states have call predecessors, (594), 594 states have call successors, (594) [2021-11-13 18:22:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 4421 transitions. [2021-11-13 18:22:37,432 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 4421 transitions. Word has length 165 [2021-11-13 18:22:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:37,433 INFO L470 AbstractCegarLoop]: Abstraction has 3362 states and 4421 transitions. [2021-11-13 18:22:37,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 18:22:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 4421 transitions. [2021-11-13 18:22:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-13 18:22:37,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:37,443 INFO L514 BasicCegarLoop]: trace histogram [12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:22:37,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:37,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:37,658 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:37,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:37,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1601551212, now seen corresponding path program 1 times [2021-11-13 18:22:37,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:37,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148731978] [2021-11-13 18:22:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:37,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:37,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:37,661 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:37,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:22:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:22:38,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:22:38,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:22:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-13 18:22:38,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:22:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-13 18:22:39,049 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:22:39,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148731978] [2021-11-13 18:22:39,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148731978] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:22:39,049 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:22:39,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 18:22:39,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374635216] [2021-11-13 18:22:39,050 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:22:39,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:22:39,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:22:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:22:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:22:39,052 INFO L87 Difference]: Start difference. First operand 3362 states and 4421 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 18:22:39,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:22:39,246 INFO L93 Difference]: Finished difference Result 6364 states and 8435 transitions. [2021-11-13 18:22:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:22:39,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2021-11-13 18:22:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:22:39,277 INFO L225 Difference]: With dead ends: 6364 [2021-11-13 18:22:39,277 INFO L226 Difference]: Without dead ends: 3380 [2021-11-13 18:22:39,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:22:39,291 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 0 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.03ms IncrementalHoareTripleChecker+Time [2021-11-13 18:22:39,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3450 Invalid, 17 Unknown, 0 Unchecked, 8.07ms Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 53.03ms Time] [2021-11-13 18:22:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2021-11-13 18:22:39,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 3366. [2021-11-13 18:22:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3366 states, 2570 states have (on average 1.257976653696498) internal successors, (3233), 2609 states have internal predecessors, (3233), 596 states have call successors, (596), 198 states have call predecessors, (596), 199 states have return successors, (610), 594 states have call predecessors, (610), 594 states have call successors, (610) [2021-11-13 18:22:39,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 4439 transitions. [2021-11-13 18:22:39,516 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 4439 transitions. Word has length 166 [2021-11-13 18:22:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:22:39,517 INFO L470 AbstractCegarLoop]: Abstraction has 3366 states and 4439 transitions. [2021-11-13 18:22:39,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 18:22:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 4439 transitions. [2021-11-13 18:22:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-13 18:22:39,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:22:39,529 INFO L514 BasicCegarLoop]: trace histogram [12, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2021-11-13 18:22:39,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:39,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:39,751 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:22:39,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:22:39,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1476408975, now seen corresponding path program 1 times [2021-11-13 18:22:39,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:22:39,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704531162] [2021-11-13 18:22:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:22:39,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:22:39,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:22:39,753 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:22:39,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:22:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:22:42,645 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:22:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:22:45,813 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 18:22:45,813 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:22:45,814 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:22:45,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:22:46,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:22:46,033 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-13 18:22:46,037 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:22:46,118 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,119 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,120 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,120 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,121 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,121 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,121 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,122 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,122 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,123 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,123 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,123 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,124 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,124 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,125 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,125 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,125 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,126 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,126 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,126 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,127 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:46,127 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,127 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,128 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:46,128 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:46,129 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,129 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,129 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:46,130 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,130 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,131 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,131 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,132 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,132 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,132 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,133 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,133 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,133 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,134 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,134 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,134 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:46,135 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,135 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,135 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:46,135 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:46,136 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,136 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2021-11-13 18:22:46,136 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2021-11-13 18:22:46,188 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 18:22:46,194 INFO L158 Benchmark]: Toolchain (without parser) took 32866.22ms. Allocated memory was 56.6MB in the beginning and 299.9MB in the end (delta: 243.3MB). Free memory was 29.2MB in the beginning and 194.1MB in the end (delta: -164.9MB). Peak memory consumption was 168.1MB. Max. memory is 16.1GB. [2021-11-13 18:22:46,194 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 56.6MB. Free memory is still 37.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:22:46,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1671.64ms. Allocated memory was 56.6MB in the beginning and 90.2MB in the end (delta: 33.6MB). Free memory was 29.0MB in the beginning and 42.7MB in the end (delta: -13.7MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2021-11-13 18:22:46,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 213.33ms. Allocated memory is still 90.2MB. Free memory was 42.7MB in the beginning and 51.3MB in the end (delta: -8.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-11-13 18:22:46,196 INFO L158 Benchmark]: Boogie Preprocessor took 193.30ms. Allocated memory is still 90.2MB. Free memory was 51.3MB in the beginning and 40.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:22:46,196 INFO L158 Benchmark]: RCFGBuilder took 3850.90ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 40.8MB in the beginning and 45.2MB in the end (delta: -4.4MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2021-11-13 18:22:46,197 INFO L158 Benchmark]: TraceAbstraction took 26930.39ms. Allocated memory was 117.4MB in the beginning and 299.9MB in the end (delta: 182.5MB). Free memory was 45.2MB in the beginning and 194.1MB in the end (delta: -149.0MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. [2021-11-13 18:22:46,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 56.6MB. Free memory is still 37.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1671.64ms. Allocated memory was 56.6MB in the beginning and 90.2MB in the end (delta: 33.6MB). Free memory was 29.0MB in the beginning and 42.7MB in the end (delta: -13.7MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 213.33ms. Allocated memory is still 90.2MB. Free memory was 42.7MB in the beginning and 51.3MB in the end (delta: -8.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 193.30ms. Allocated memory is still 90.2MB. Free memory was 51.3MB in the beginning and 40.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3850.90ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 40.8MB in the beginning and 45.2MB in the end (delta: -4.4MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * TraceAbstraction took 26930.39ms. Allocated memory was 117.4MB in the beginning and 299.9MB in the end (delta: 182.5MB). Free memory was 45.2MB in the beginning and 194.1MB in the end (delta: -149.0MB). Peak memory consumption was 123.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 18:22:46,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33296fc7-4423-4dfc-a6ca-0d260dc4bc45/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null