./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8 --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 32bit --witnessprinter.graph.data.programhash f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:05:10,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:05:10,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:05:10,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:05:10,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:05:10,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:05:10,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:05:10,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:05:10,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:05:10,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:05:10,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:05:10,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:05:10,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:05:10,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:05:10,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:05:10,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:05:10,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:05:10,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:05:10,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:05:10,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:05:10,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:05:10,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:05:10,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:05:10,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:05:10,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:05:10,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:05:10,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:05:10,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:05:10,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:05:10,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:05:10,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:05:10,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:05:10,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:05:10,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:05:10,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:05:10,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:05:10,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:05:10,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:05:10,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:05:10,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:05:10,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:05:10,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:05:10,541 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:05:10,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:05:10,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:05:10,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:05:10,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:05:10,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:05:10,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:05:10,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:05:10,544 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:05:10,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:05:10,544 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:05:10,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:05:10,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:05:10,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:05:10,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:05:10,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:05:10,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:05:10,546 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:05:10,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:05:10,546 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:05:10,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:05:10,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:05:10,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:05:10,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:05:10,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:05:10,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:05:10,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:05:10,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:05:10,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:05:10,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:05:10,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:05:10,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:05:10,548 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:05:10,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:05:10,549 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:05:10,549 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a [2022-12-13 17:05:10,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:05:10,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:05:10,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:05:10,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:05:10,751 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:05:10,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2022-12-13 17:05:13,303 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:05:13,575 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:05:13,575 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2022-12-13 17:05:13,594 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/data/ca2bf394b/08920797b41a4b1dad0ec48e9f82705b/FLAG575c861f7 [2022-12-13 17:05:13,912 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/data/ca2bf394b/08920797b41a4b1dad0ec48e9f82705b [2022-12-13 17:05:13,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:05:13,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:05:13,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:05:13,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:05:13,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:05:13,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:05:13" (1/1) ... [2022-12-13 17:05:13,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412269df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:13, skipping insertion in model container [2022-12-13 17:05:13,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:05:13" (1/1) ... [2022-12-13 17:05:13,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:05:14,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:05:14,131 WARN L237 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_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2022-12-13 17:05:14,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:05:14,323 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:05:14,333 WARN L237 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_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2022-12-13 17:05:14,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:05:14,448 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:05:14,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14 WrapperNode [2022-12-13 17:05:14,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:05:14,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:05:14,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:05:14,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:05:14,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,513 INFO L138 Inliner]: procedures = 92, calls = 344, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 839 [2022-12-13 17:05:14,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:05:14,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:05:14,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:05:14,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:05:14,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,544 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:05:14,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:05:14,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:05:14,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:05:14,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (1/1) ... [2022-12-13 17:05:14,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:05:14,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:14,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:05:14,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:05:14,612 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-13 17:05:14,613 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-13 17:05:14,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:05:14,613 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-12-13 17:05:14,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-12-13 17:05:14,613 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-13 17:05:14,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-13 17:05:14,614 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-12-13 17:05:14,614 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-12-13 17:05:14,614 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 17:05:14,614 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 17:05:14,614 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 17:05:14,614 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 17:05:14,615 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-12-13 17:05:14,615 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-12-13 17:05:14,615 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 17:05:14,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 17:05:14,615 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 17:05:14,615 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 17:05:14,615 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 17:05:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 17:05:14,616 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 17:05:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 17:05:14,616 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 17:05:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 17:05:14,616 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 17:05:14,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 17:05:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 17:05:14,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 17:05:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 17:05:14,626 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 17:05:14,626 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 17:05:14,627 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 17:05:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 17:05:14,627 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 17:05:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 17:05:14,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 17:05:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 17:05:14,627 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 17:05:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:05:14,627 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-12-13 17:05:14,627 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-12-13 17:05:14,628 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 17:05:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 17:05:14,628 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 17:05:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 17:05:14,628 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 17:05:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 17:05:14,628 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-12-13 17:05:14,628 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-12-13 17:05:14,628 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-12-13 17:05:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-12-13 17:05:14,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:05:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:05:14,629 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 17:05:14,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 17:05:14,742 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:05:14,744 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:05:15,520 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:05:15,529 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:05:15,530 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 17:05:15,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:05:15 BoogieIcfgContainer [2022-12-13 17:05:15,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:05:15,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:05:15,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:05:15,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:05:15,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:05:13" (1/3) ... [2022-12-13 17:05:15,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ca02fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:05:15, skipping insertion in model container [2022-12-13 17:05:15,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:05:14" (2/3) ... [2022-12-13 17:05:15,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ca02fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:05:15, skipping insertion in model container [2022-12-13 17:05:15,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:05:15" (3/3) ... [2022-12-13 17:05:15,538 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2022-12-13 17:05:15,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:05:15,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:05:15,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:05:15,602 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33d9e31e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:05:15,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:05:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 600 states, 470 states have (on average 1.6893617021276597) internal successors, (794), 490 states have internal predecessors, (794), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-12-13 17:05:15,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 17:05:15,622 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:15,622 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-12-13 17:05:15,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:15,627 INFO L85 PathProgramCache]: Analyzing trace with hash 758163300, now seen corresponding path program 1 times [2022-12-13 17:05:15,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:15,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808180299] [2022-12-13 17:05:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:15,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:05:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:05:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:05:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 17:05:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 17:05:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 17:05:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 17:05:16,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:16,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808180299] [2022-12-13 17:05:16,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808180299] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:16,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875038659] [2022-12-13 17:05:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:16,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:16,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:16,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:16,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:05:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 17:05:16,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 17:05:16,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:16,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875038659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:16,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:16,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-12-13 17:05:16,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616882611] [2022-12-13 17:05:16,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:16,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:05:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:05:16,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:05:16,375 INFO L87 Difference]: Start difference. First operand has 600 states, 470 states have (on average 1.6893617021276597) internal successors, (794), 490 states have internal predecessors, (794), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 17:05:16,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:16,441 INFO L93 Difference]: Finished difference Result 1178 states and 1979 transitions. [2022-12-13 17:05:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:05:16,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-12-13 17:05:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:16,455 INFO L225 Difference]: With dead ends: 1178 [2022-12-13 17:05:16,455 INFO L226 Difference]: Without dead ends: 590 [2022-12-13 17:05:16,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:05:16,464 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:16,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:05:16,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-12-13 17:05:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2022-12-13 17:05:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.6717062634989202) internal successors, (774), 481 states have internal predecessors, (774), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-12-13 17:05:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 975 transitions. [2022-12-13 17:05:16,533 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 975 transitions. Word has length 83 [2022-12-13 17:05:16,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:16,535 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 975 transitions. [2022-12-13 17:05:16,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 17:05:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 975 transitions. [2022-12-13 17:05:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 17:05:16,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:16,541 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-12-13 17:05:16,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:05:16,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 17:05:16,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:16,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:16,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1565127940, now seen corresponding path program 1 times [2022-12-13 17:05:16,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:16,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992125366] [2022-12-13 17:05:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:16,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 17:05:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 17:05:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 17:05:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 17:05:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 17:05:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 17:05:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 17:05:16,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:16,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992125366] [2022-12-13 17:05:16,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992125366] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:16,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362309449] [2022-12-13 17:05:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:16,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:16,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:16,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:05:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:17,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:05:17,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 17:05:17,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:17,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362309449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:17,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:17,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 17:05:17,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377574310] [2022-12-13 17:05:17,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:17,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:05:17,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:05:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:05:17,287 INFO L87 Difference]: Start difference. First operand 590 states and 975 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 17:05:17,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:17,391 INFO L93 Difference]: Finished difference Result 1181 states and 1958 transitions. [2022-12-13 17:05:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:05:17,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-12-13 17:05:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:17,398 INFO L225 Difference]: With dead ends: 1181 [2022-12-13 17:05:17,398 INFO L226 Difference]: Without dead ends: 599 [2022-12-13 17:05:17,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:05:17,402 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 26 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:17,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2871 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:05:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-12-13 17:05:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2022-12-13 17:05:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 471 states have (on average 1.673036093418259) internal successors, (788), 489 states have internal predecessors, (788), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-12-13 17:05:17,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 989 transitions. [2022-12-13 17:05:17,437 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 989 transitions. Word has length 83 [2022-12-13 17:05:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:17,437 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 989 transitions. [2022-12-13 17:05:17,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 17:05:17,438 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 989 transitions. [2022-12-13 17:05:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 17:05:17,441 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:17,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2022-12-13 17:05:17,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:05:17,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:17,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:17,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1155094178, now seen corresponding path program 1 times [2022-12-13 17:05:17,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:17,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739544974] [2022-12-13 17:05:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:17,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:05:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:17,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 17:05:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:17,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:05:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:05:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 17:05:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 17:05:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 17:05:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:05:18,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:18,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739544974] [2022-12-13 17:05:18,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739544974] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:18,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151414186] [2022-12-13 17:05:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:18,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:18,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:18,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:18,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:05:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:05:18,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 17:05:18,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:18,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151414186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:18,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:18,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-12-13 17:05:18,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682021068] [2022-12-13 17:05:18,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:18,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:05:18,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:05:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:05:18,234 INFO L87 Difference]: Start difference. First operand 599 states and 989 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 17:05:18,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:18,384 INFO L93 Difference]: Finished difference Result 1233 states and 2053 transitions. [2022-12-13 17:05:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:05:18,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2022-12-13 17:05:18,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:18,388 INFO L225 Difference]: With dead ends: 1233 [2022-12-13 17:05:18,388 INFO L226 Difference]: Without dead ends: 644 [2022-12-13 17:05:18,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:05:18,391 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 170 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:18,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 2715 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:18,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-12-13 17:05:18,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2022-12-13 17:05:18,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 515 states have (on average 1.6932038834951457) internal successors, (872), 533 states have internal predecessors, (872), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-12-13 17:05:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1073 transitions. [2022-12-13 17:05:18,416 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1073 transitions. Word has length 85 [2022-12-13 17:05:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:18,417 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 1073 transitions. [2022-12-13 17:05:18,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-12-13 17:05:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1073 transitions. [2022-12-13 17:05:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 17:05:18,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:18,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:05:18,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:05:18,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 17:05:18,621 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1102384449, now seen corresponding path program 1 times [2022-12-13 17:05:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:18,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678500071] [2022-12-13 17:05:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:05:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 17:05:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:05:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 17:05:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 17:05:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 17:05:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 17:05:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 17:05:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 17:05:19,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:19,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678500071] [2022-12-13 17:05:19,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678500071] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:19,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270888991] [2022-12-13 17:05:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:19,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:19,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:19,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:19,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:05:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:05:19,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 17:05:19,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:19,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270888991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:19,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:19,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-12-13 17:05:19,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487345998] [2022-12-13 17:05:19,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:19,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:05:19,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:19,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:05:19,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:05:19,317 INFO L87 Difference]: Start difference. First operand 644 states and 1073 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 17:05:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:19,443 INFO L93 Difference]: Finished difference Result 1311 states and 2186 transitions. [2022-12-13 17:05:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:05:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-12-13 17:05:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:19,450 INFO L225 Difference]: With dead ends: 1311 [2022-12-13 17:05:19,450 INFO L226 Difference]: Without dead ends: 677 [2022-12-13 17:05:19,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:05:19,454 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 118 mSDsluCounter, 4732 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 5701 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:19,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 5701 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2022-12-13 17:05:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 657. [2022-12-13 17:05:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.6895238095238094) internal successors, (887), 545 states have internal predecessors, (887), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2022-12-13 17:05:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1094 transitions. [2022-12-13 17:05:19,486 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1094 transitions. Word has length 103 [2022-12-13 17:05:19,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:19,486 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1094 transitions. [2022-12-13 17:05:19,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 17:05:19,486 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1094 transitions. [2022-12-13 17:05:19,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 17:05:19,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:19,489 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:05:19,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:05:19,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:19,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:19,690 INFO L85 PathProgramCache]: Analyzing trace with hash -260810925, now seen corresponding path program 1 times [2022-12-13 17:05:19,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:19,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041652204] [2022-12-13 17:05:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:19,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:05:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 17:05:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:05:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 17:05:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 17:05:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 17:05:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 17:05:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 17:05:19,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:19,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041652204] [2022-12-13 17:05:19,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041652204] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:19,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489188156] [2022-12-13 17:05:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:19,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:19,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:19,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:19,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:05:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:05:20,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 17:05:20,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:20,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489188156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:20,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:20,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-12-13 17:05:20,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107652071] [2022-12-13 17:05:20,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:20,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:05:20,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:20,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:05:20,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:05:20,166 INFO L87 Difference]: Start difference. First operand 657 states and 1094 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:20,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:20,262 INFO L93 Difference]: Finished difference Result 1331 states and 2217 transitions. [2022-12-13 17:05:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:05:20,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2022-12-13 17:05:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:20,267 INFO L225 Difference]: With dead ends: 1331 [2022-12-13 17:05:20,267 INFO L226 Difference]: Without dead ends: 686 [2022-12-13 17:05:20,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:05:20,269 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 129 mSDsluCounter, 4720 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5689 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:20,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5689 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-12-13 17:05:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 657. [2022-12-13 17:05:20,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 525 states have (on average 1.6895238095238094) internal successors, (887), 545 states have internal predecessors, (887), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2022-12-13 17:05:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1094 transitions. [2022-12-13 17:05:20,292 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1094 transitions. Word has length 88 [2022-12-13 17:05:20,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:20,293 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1094 transitions. [2022-12-13 17:05:20,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:20,293 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1094 transitions. [2022-12-13 17:05:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 17:05:20,295 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:20,295 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:05:20,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:05:20,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:20,496 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:20,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:20,496 INFO L85 PathProgramCache]: Analyzing trace with hash 750962120, now seen corresponding path program 1 times [2022-12-13 17:05:20,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:20,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846311826] [2022-12-13 17:05:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:20,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:05:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 17:05:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:05:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 17:05:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 17:05:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 17:05:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 17:05:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 17:05:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 17:05:20,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:20,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846311826] [2022-12-13 17:05:20,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846311826] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:20,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400945182] [2022-12-13 17:05:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:20,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:20,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:20,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:20,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:05:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:05:21,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 17:05:21,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:21,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400945182] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:21,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:21,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 17:05:21,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69165715] [2022-12-13 17:05:21,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:21,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:05:21,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:21,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:05:21,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:05:21,069 INFO L87 Difference]: Start difference. First operand 657 states and 1094 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 17:05:21,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:21,135 INFO L93 Difference]: Finished difference Result 1317 states and 2194 transitions. [2022-12-13 17:05:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:05:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2022-12-13 17:05:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:21,140 INFO L225 Difference]: With dead ends: 1317 [2022-12-13 17:05:21,141 INFO L226 Difference]: Without dead ends: 668 [2022-12-13 17:05:21,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:05:21,145 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 20 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:21,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2872 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:05:21,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-12-13 17:05:21,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 666. [2022-12-13 17:05:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 553 states have internal predecessors, (896), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-12-13 17:05:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1102 transitions. [2022-12-13 17:05:21,176 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1102 transitions. Word has length 104 [2022-12-13 17:05:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:21,176 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1102 transitions. [2022-12-13 17:05:21,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 17:05:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1102 transitions. [2022-12-13 17:05:21,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 17:05:21,178 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:21,178 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:05:21,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:05:21,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 17:05:21,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash 930211694, now seen corresponding path program 1 times [2022-12-13 17:05:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:21,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802711686] [2022-12-13 17:05:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:05:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:05:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:05:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:05:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 17:05:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:05:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 17:05:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 17:05:21,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:21,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802711686] [2022-12-13 17:05:21,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802711686] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:21,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044178482] [2022-12-13 17:05:21,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:21,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:21,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:21,575 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:21,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:05:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:21,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:05:21,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 17:05:21,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:21,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044178482] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:21,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:21,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-12-13 17:05:21,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987794823] [2022-12-13 17:05:21,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:21,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:05:21,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:05:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:05:21,820 INFO L87 Difference]: Start difference. First operand 666 states and 1102 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:21,922 INFO L93 Difference]: Finished difference Result 1340 states and 2220 transitions. [2022-12-13 17:05:21,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:05:21,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2022-12-13 17:05:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:21,927 INFO L225 Difference]: With dead ends: 1340 [2022-12-13 17:05:21,928 INFO L226 Difference]: Without dead ends: 697 [2022-12-13 17:05:21,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:05:21,931 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 140 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 5660 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:21,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 5660 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-12-13 17:05:21,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 666. [2022-12-13 17:05:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 553 states have internal predecessors, (896), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-12-13 17:05:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1102 transitions. [2022-12-13 17:05:21,957 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1102 transitions. Word has length 89 [2022-12-13 17:05:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:21,957 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1102 transitions. [2022-12-13 17:05:21,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:21,957 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1102 transitions. [2022-12-13 17:05:21,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 17:05:21,959 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:21,960 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:05:21,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:05:22,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:22,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:22,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:22,162 INFO L85 PathProgramCache]: Analyzing trace with hash 672369264, now seen corresponding path program 1 times [2022-12-13 17:05:22,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:22,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635263634] [2022-12-13 17:05:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:22,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:05:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 17:05:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:05:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:05:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 17:05:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:05:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 17:05:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 17:05:22,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:22,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635263634] [2022-12-13 17:05:22,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635263634] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:22,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571933513] [2022-12-13 17:05:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:22,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:22,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:22,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:22,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:05:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:22,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:05:22,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 17:05:22,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:22,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571933513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:22,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:22,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-12-13 17:05:22,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265341298] [2022-12-13 17:05:22,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:22,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:05:22,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:22,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:05:22,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:05:22,724 INFO L87 Difference]: Start difference. First operand 666 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:22,873 INFO L93 Difference]: Finished difference Result 1343 states and 2224 transitions. [2022-12-13 17:05:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:05:22,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2022-12-13 17:05:22,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:22,878 INFO L225 Difference]: With dead ends: 1343 [2022-12-13 17:05:22,879 INFO L226 Difference]: Without dead ends: 700 [2022-12-13 17:05:22,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:05:22,882 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 140 mSDsluCounter, 5628 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:22,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 6584 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-12-13 17:05:22,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 666. [2022-12-13 17:05:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 553 states have internal predecessors, (896), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-12-13 17:05:22,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1102 transitions. [2022-12-13 17:05:22,908 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1102 transitions. Word has length 89 [2022-12-13 17:05:22,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:22,908 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1102 transitions. [2022-12-13 17:05:22,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:22,909 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1102 transitions. [2022-12-13 17:05:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 17:05:22,911 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:22,911 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:05:22,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:05:23,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:23,111 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash -61311657, now seen corresponding path program 1 times [2022-12-13 17:05:23,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:23,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406012654] [2022-12-13 17:05:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:05:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:05:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:05:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 17:05:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 17:05:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 17:05:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 17:05:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 17:05:23,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:23,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406012654] [2022-12-13 17:05:23,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406012654] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:23,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945100205] [2022-12-13 17:05:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:23,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:23,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:23,300 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:23,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:05:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:05:23,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 17:05:23,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:23,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945100205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:23,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:23,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-12-13 17:05:23,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338685764] [2022-12-13 17:05:23,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:23,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:05:23,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:23,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:05:23,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:05:23,539 INFO L87 Difference]: Start difference. First operand 666 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:23,694 INFO L93 Difference]: Finished difference Result 1343 states and 2224 transitions. [2022-12-13 17:05:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:05:23,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2022-12-13 17:05:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:23,698 INFO L225 Difference]: With dead ends: 1343 [2022-12-13 17:05:23,698 INFO L226 Difference]: Without dead ends: 700 [2022-12-13 17:05:23,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:05:23,700 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 150 mSDsluCounter, 5616 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6572 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:23,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 6572 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-12-13 17:05:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 666. [2022-12-13 17:05:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 553 states have internal predecessors, (896), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-12-13 17:05:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1102 transitions. [2022-12-13 17:05:23,716 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1102 transitions. Word has length 90 [2022-12-13 17:05:23,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:23,716 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1102 transitions. [2022-12-13 17:05:23,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1102 transitions. [2022-12-13 17:05:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 17:05:23,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:23,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:05:23,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 17:05:23,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:23,919 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:23,919 INFO L85 PathProgramCache]: Analyzing trace with hash -521611988, now seen corresponding path program 1 times [2022-12-13 17:05:23,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:23,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959163829] [2022-12-13 17:05:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:05:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:05:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:05:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 17:05:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 17:05:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 17:05:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 17:05:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 17:05:24,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:24,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959163829] [2022-12-13 17:05:24,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959163829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:24,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393099248] [2022-12-13 17:05:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:24,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:24,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:24,254 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:24,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:05:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:05:24,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 17:05:24,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:24,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393099248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:24,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:24,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-12-13 17:05:24,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792762085] [2022-12-13 17:05:24,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:24,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:05:24,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:24,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:05:24,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:05:24,524 INFO L87 Difference]: Start difference. First operand 666 states and 1102 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 17:05:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:24,678 INFO L93 Difference]: Finished difference Result 1334 states and 2209 transitions. [2022-12-13 17:05:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:05:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2022-12-13 17:05:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:24,681 INFO L225 Difference]: With dead ends: 1334 [2022-12-13 17:05:24,681 INFO L226 Difference]: Without dead ends: 691 [2022-12-13 17:05:24,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:05:24,683 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 160 mSDsluCounter, 5604 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6560 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:24,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 6560 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-12-13 17:05:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 666. [2022-12-13 17:05:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6810506566604129) internal successors, (896), 553 states have internal predecessors, (896), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-12-13 17:05:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1102 transitions. [2022-12-13 17:05:24,698 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1102 transitions. Word has length 107 [2022-12-13 17:05:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:24,698 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1102 transitions. [2022-12-13 17:05:24,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 17:05:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1102 transitions. [2022-12-13 17:05:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 17:05:24,700 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:24,700 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:05:24,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 17:05:24,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:24,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:24,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1014024074, now seen corresponding path program 1 times [2022-12-13 17:05:24,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:24,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789218199] [2022-12-13 17:05:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:24,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:05:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:05:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 17:05:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 17:05:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 17:05:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 17:05:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 17:05:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 17:05:25,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:25,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789218199] [2022-12-13 17:05:25,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789218199] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:25,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546333104] [2022-12-13 17:05:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:25,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:25,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:25,244 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:25,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 17:05:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:05:25,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 17:05:25,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:25,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546333104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:25,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:25,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 17:05:25,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624066112] [2022-12-13 17:05:25,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:25,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:05:25,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:05:25,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:05:25,411 INFO L87 Difference]: Start difference. First operand 666 states and 1102 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 17:05:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:25,463 INFO L93 Difference]: Finished difference Result 1298 states and 2156 transitions. [2022-12-13 17:05:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:05:25,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2022-12-13 17:05:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:25,468 INFO L225 Difference]: With dead ends: 1298 [2022-12-13 17:05:25,468 INFO L226 Difference]: Without dead ends: 666 [2022-12-13 17:05:25,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:05:25,471 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 35 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:25,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2870 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:05:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-12-13 17:05:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2022-12-13 17:05:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6716697936210132) internal successors, (891), 553 states have internal predecessors, (891), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2022-12-13 17:05:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1097 transitions. [2022-12-13 17:05:25,493 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1097 transitions. Word has length 107 [2022-12-13 17:05:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:25,493 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1097 transitions. [2022-12-13 17:05:25,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 17:05:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1097 transitions. [2022-12-13 17:05:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 17:05:25,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:25,496 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:05:25,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 17:05:25,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:25,697 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1745749057, now seen corresponding path program 1 times [2022-12-13 17:05:25,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:25,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453292603] [2022-12-13 17:05:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:25,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:05:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:05:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 17:05:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 17:05:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 17:05:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 17:05:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 17:05:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 17:05:26,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:26,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453292603] [2022-12-13 17:05:26,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453292603] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:26,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69369866] [2022-12-13 17:05:26,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:26,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:26,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:26,052 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:26,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 17:05:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:05:26,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:05:26,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:26,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69369866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:26,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:26,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-12-13 17:05:26,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880674306] [2022-12-13 17:05:26,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:26,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:05:26,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:05:26,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:05:26,271 INFO L87 Difference]: Start difference. First operand 666 states and 1097 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 17:05:26,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:26,370 INFO L93 Difference]: Finished difference Result 1294 states and 2147 transitions. [2022-12-13 17:05:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:05:26,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2022-12-13 17:05:26,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:26,374 INFO L225 Difference]: With dead ends: 1294 [2022-12-13 17:05:26,374 INFO L226 Difference]: Without dead ends: 720 [2022-12-13 17:05:26,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:05:26,376 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 241 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:26,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 2704 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-12-13 17:05:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 711. [2022-12-13 17:05:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 577 states have (on average 1.6897746967071057) internal successors, (975), 597 states have internal predecessors, (975), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2022-12-13 17:05:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1180 transitions. [2022-12-13 17:05:26,390 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1180 transitions. Word has length 108 [2022-12-13 17:05:26,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:26,390 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1180 transitions. [2022-12-13 17:05:26,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 17:05:26,390 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1180 transitions. [2022-12-13 17:05:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 17:05:26,392 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:26,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2022-12-13 17:05:26,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 17:05:26,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 17:05:26,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:26,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:26,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1539448053, now seen corresponding path program 1 times [2022-12-13 17:05:26,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:26,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979260598] [2022-12-13 17:05:26,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:26,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:05:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:05:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 17:05:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:05:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 17:05:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 17:05:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:05:26,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:26,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979260598] [2022-12-13 17:05:26,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979260598] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:26,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477642691] [2022-12-13 17:05:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:26,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:26,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:26,890 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:26,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 17:05:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:05:27,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 17:05:27,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:27,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477642691] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:27,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:27,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-12-13 17:05:27,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258587675] [2022-12-13 17:05:27,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:27,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:05:27,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:27,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:05:27,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:05:27,079 INFO L87 Difference]: Start difference. First operand 711 states and 1180 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:27,151 INFO L93 Difference]: Finished difference Result 1320 states and 2183 transitions. [2022-12-13 17:05:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:05:27,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2022-12-13 17:05:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:27,154 INFO L225 Difference]: With dead ends: 1320 [2022-12-13 17:05:27,154 INFO L226 Difference]: Without dead ends: 746 [2022-12-13 17:05:27,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:05:27,156 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 115 mSDsluCounter, 4699 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5660 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:27,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5660 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:05:27,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-12-13 17:05:27,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 724. [2022-12-13 17:05:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 587 states have (on average 1.686541737649063) internal successors, (990), 609 states have internal predecessors, (990), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-12-13 17:05:27,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1199 transitions. [2022-12-13 17:05:27,172 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1199 transitions. Word has length 93 [2022-12-13 17:05:27,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:27,173 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1199 transitions. [2022-12-13 17:05:27,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:27,173 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1199 transitions. [2022-12-13 17:05:27,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 17:05:27,175 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:27,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:05:27,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 17:05:27,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:27,376 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash 115027845, now seen corresponding path program 1 times [2022-12-13 17:05:27,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:27,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299485780] [2022-12-13 17:05:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:27,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:05:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:05:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 17:05:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:05:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 17:05:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 17:05:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 17:05:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 17:05:27,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:27,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299485780] [2022-12-13 17:05:27,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299485780] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:27,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140950343] [2022-12-13 17:05:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:27,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:27,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:27,727 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:27,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 17:05:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:27,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:05:27,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-13 17:05:27,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:27,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140950343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:27,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:27,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-12-13 17:05:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639695636] [2022-12-13 17:05:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:27,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:05:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:05:27,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:05:27,949 INFO L87 Difference]: Start difference. First operand 724 states and 1199 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 17:05:28,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:28,042 INFO L93 Difference]: Finished difference Result 1329 states and 2197 transitions. [2022-12-13 17:05:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:05:28,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2022-12-13 17:05:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:28,047 INFO L225 Difference]: With dead ends: 1329 [2022-12-13 17:05:28,047 INFO L226 Difference]: Without dead ends: 755 [2022-12-13 17:05:28,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:05:28,050 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 126 mSDsluCounter, 4687 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:28,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5648 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-12-13 17:05:28,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 724. [2022-12-13 17:05:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 587 states have (on average 1.686541737649063) internal successors, (990), 609 states have internal predecessors, (990), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-12-13 17:05:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1199 transitions. [2022-12-13 17:05:28,073 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1199 transitions. Word has length 110 [2022-12-13 17:05:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:28,073 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1199 transitions. [2022-12-13 17:05:28,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 17:05:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1199 transitions. [2022-12-13 17:05:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 17:05:28,075 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:28,075 INFO L195 NwaCegarLoop]: 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] [2022-12-13 17:05:28,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 17:05:28,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 17:05:28,277 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:28,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash 447314670, now seen corresponding path program 1 times [2022-12-13 17:05:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:28,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327956360] [2022-12-13 17:05:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:28,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:05:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:05:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 17:05:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 17:05:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 17:05:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 17:05:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:05:28,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:28,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327956360] [2022-12-13 17:05:28,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327956360] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:28,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532905884] [2022-12-13 17:05:28,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:28,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:28,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:28,480 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:28,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 17:05:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:28,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:05:28,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 17:05:28,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:28,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532905884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:28,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:28,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-12-13 17:05:28,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238298123] [2022-12-13 17:05:28,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:28,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:05:28,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:28,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:05:28,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:05:28,705 INFO L87 Difference]: Start difference. First operand 724 states and 1199 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:28,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:28,852 INFO L93 Difference]: Finished difference Result 1332 states and 2200 transitions. [2022-12-13 17:05:28,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:05:28,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-12-13 17:05:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:28,856 INFO L225 Difference]: With dead ends: 1332 [2022-12-13 17:05:28,857 INFO L226 Difference]: Without dead ends: 758 [2022-12-13 17:05:28,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:05:28,860 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 138 mSDsluCounter, 5604 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6555 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:28,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 6555 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:28,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-12-13 17:05:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 724. [2022-12-13 17:05:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 587 states have (on average 1.686541737649063) internal successors, (990), 609 states have internal predecessors, (990), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-12-13 17:05:28,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1199 transitions. [2022-12-13 17:05:28,877 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1199 transitions. Word has length 94 [2022-12-13 17:05:28,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:28,877 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1199 transitions. [2022-12-13 17:05:28,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:28,878 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1199 transitions. [2022-12-13 17:05:28,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 17:05:28,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:28,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:05:28,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 17:05:29,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 17:05:29,080 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:29,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1502779795, now seen corresponding path program 1 times [2022-12-13 17:05:29,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:29,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494846461] [2022-12-13 17:05:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:05:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:05:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 17:05:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 17:05:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 17:05:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 17:05:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 17:05:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 17:05:29,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:29,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494846461] [2022-12-13 17:05:29,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494846461] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:29,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477957756] [2022-12-13 17:05:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:29,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:29,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:29,360 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:29,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 17:05:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:05:29,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 17:05:29,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:29,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477957756] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:29,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:29,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 17:05:29,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090846054] [2022-12-13 17:05:29,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:05:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:05:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:05:29,587 INFO L87 Difference]: Start difference. First operand 724 states and 1199 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 17:05:29,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:29,622 INFO L93 Difference]: Finished difference Result 1374 states and 2279 transitions. [2022-12-13 17:05:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:05:29,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2022-12-13 17:05:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:29,626 INFO L225 Difference]: With dead ends: 1374 [2022-12-13 17:05:29,626 INFO L226 Difference]: Without dead ends: 724 [2022-12-13 17:05:29,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:05:29,628 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 10 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:29,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2872 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:05:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-12-13 17:05:29,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2022-12-13 17:05:29,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 587 states have (on average 1.6814310051107326) internal successors, (987), 609 states have internal predecessors, (987), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-12-13 17:05:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1196 transitions. [2022-12-13 17:05:29,650 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1196 transitions. Word has length 110 [2022-12-13 17:05:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:29,650 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1196 transitions. [2022-12-13 17:05:29,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 17:05:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1196 transitions. [2022-12-13 17:05:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 17:05:29,653 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:29,653 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:05:29,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 17:05:29,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:05:29,854 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:29,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:29,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1290889357, now seen corresponding path program 1 times [2022-12-13 17:05:29,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:29,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202131178] [2022-12-13 17:05:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:29,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:05:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:29,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:05:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 17:05:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 17:05:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 17:05:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 17:05:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:05:30,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:30,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202131178] [2022-12-13 17:05:30,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202131178] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:30,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161067052] [2022-12-13 17:05:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:30,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:30,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:30,030 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:30,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 17:05:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:05:30,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 17:05:30,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:30,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161067052] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:30,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:30,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-12-13 17:05:30,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214885632] [2022-12-13 17:05:30,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:30,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:05:30,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:30,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:05:30,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:05:30,266 INFO L87 Difference]: Start difference. First operand 724 states and 1196 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:30,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:30,380 INFO L93 Difference]: Finished difference Result 1323 states and 2183 transitions. [2022-12-13 17:05:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:05:30,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2022-12-13 17:05:30,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:30,383 INFO L225 Difference]: With dead ends: 1323 [2022-12-13 17:05:30,384 INFO L226 Difference]: Without dead ends: 749 [2022-12-13 17:05:30,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:05:30,385 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 148 mSDsluCounter, 5577 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6525 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:30,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 6525 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:30,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-12-13 17:05:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 724. [2022-12-13 17:05:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 587 states have (on average 1.6814310051107326) internal successors, (987), 609 states have internal predecessors, (987), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2022-12-13 17:05:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1196 transitions. [2022-12-13 17:05:30,399 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1196 transitions. Word has length 95 [2022-12-13 17:05:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:30,399 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1196 transitions. [2022-12-13 17:05:30,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-12-13 17:05:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1196 transitions. [2022-12-13 17:05:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 17:05:30,400 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:30,400 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:05:30,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 17:05:30,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 17:05:30,602 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash 879670570, now seen corresponding path program 1 times [2022-12-13 17:05:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:30,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868031771] [2022-12-13 17:05:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:05:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:05:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 17:05:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 17:05:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 17:05:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 17:05:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 17:05:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 17:05:30,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:30,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868031771] [2022-12-13 17:05:30,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868031771] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:30,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016953702] [2022-12-13 17:05:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:30,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:30,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:30,885 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:30,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 17:05:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:31,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:05:31,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 17:05:31,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:31,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016953702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:31,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:31,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-12-13 17:05:31,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249235342] [2022-12-13 17:05:31,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:31,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:05:31,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:31,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:05:31,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:05:31,253 INFO L87 Difference]: Start difference. First operand 724 states and 1196 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 17:05:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:33,836 INFO L93 Difference]: Finished difference Result 2502 states and 4179 transitions. [2022-12-13 17:05:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:05:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-12-13 17:05:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:33,844 INFO L225 Difference]: With dead ends: 2502 [2022-12-13 17:05:33,844 INFO L226 Difference]: Without dead ends: 1932 [2022-12-13 17:05:33,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:05:33,847 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 4504 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 3930 mSolverCounterSat, 882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4699 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 4812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 882 IncrementalHoareTripleChecker+Valid, 3930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:33,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4699 Valid, 1365 Invalid, 4812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [882 Valid, 3930 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 17:05:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2022-12-13 17:05:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1765. [2022-12-13 17:05:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1426 states have (on average 1.6760168302945302) internal successors, (2390), 1464 states have internal predecessors, (2390), 269 states have call successors, (269), 66 states have call predecessors, (269), 69 states have return successors, (290), 249 states have call predecessors, (290), 265 states have call successors, (290) [2022-12-13 17:05:33,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2949 transitions. [2022-12-13 17:05:33,890 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2949 transitions. Word has length 112 [2022-12-13 17:05:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:33,890 INFO L495 AbstractCegarLoop]: Abstraction has 1765 states and 2949 transitions. [2022-12-13 17:05:33,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 17:05:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2949 transitions. [2022-12-13 17:05:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 17:05:33,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:33,893 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:05:33,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 17:05:34,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 17:05:34,093 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:34,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash -521681793, now seen corresponding path program 1 times [2022-12-13 17:05:34,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:34,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474775818] [2022-12-13 17:05:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:34,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:05:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:05:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 17:05:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:05:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:05:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:05:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:05:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:05:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 17:05:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 17:05:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 17:05:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 17:05:34,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:34,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474775818] [2022-12-13 17:05:34,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474775818] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:34,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560011501] [2022-12-13 17:05:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:34,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:34,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:34,382 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:34,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 17:05:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:34,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:05:34,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 17:05:34,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:34,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560011501] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:34,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:34,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-12-13 17:05:34,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212735173] [2022-12-13 17:05:34,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:34,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:05:34,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:05:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:05:34,627 INFO L87 Difference]: Start difference. First operand 1765 states and 2949 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 17:05:34,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:34,704 INFO L93 Difference]: Finished difference Result 4970 states and 8406 transitions. [2022-12-13 17:05:34,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:05:34,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2022-12-13 17:05:34,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:34,717 INFO L225 Difference]: With dead ends: 4970 [2022-12-13 17:05:34,717 INFO L226 Difference]: Without dead ends: 3360 [2022-12-13 17:05:34,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:05:34,724 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 973 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:34,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 2067 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:05:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2022-12-13 17:05:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3341. [2022-12-13 17:05:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3341 states, 2696 states have (on average 1.676186943620178) internal successors, (4519), 2763 states have internal predecessors, (4519), 515 states have call successors, (515), 123 states have call predecessors, (515), 129 states have return successors, (591), 484 states have call predecessors, (591), 509 states have call successors, (591) [2022-12-13 17:05:34,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 5625 transitions. [2022-12-13 17:05:34,822 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 5625 transitions. Word has length 134 [2022-12-13 17:05:34,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:34,822 INFO L495 AbstractCegarLoop]: Abstraction has 3341 states and 5625 transitions. [2022-12-13 17:05:34,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 17:05:34,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 5625 transitions. [2022-12-13 17:05:34,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-12-13 17:05:34,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:34,825 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:05:34,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 17:05:35,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:35,026 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:35,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash 508172850, now seen corresponding path program 1 times [2022-12-13 17:05:35,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:35,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851020636] [2022-12-13 17:05:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:35,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 17:05:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 17:05:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:05:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 17:05:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:05:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:05:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:05:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:05:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:05:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 17:05:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 17:05:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:05:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:05:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:05:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:05:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 17:05:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 17:05:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 17:05:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 17:05:35,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:35,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851020636] [2022-12-13 17:05:35,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851020636] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:35,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281969908] [2022-12-13 17:05:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:35,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:35,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:35,542 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:35,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 17:05:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:35,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2203 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:05:35,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 17:05:35,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:05:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 17:05:35,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281969908] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:05:35,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:05:35,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2022-12-13 17:05:35,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173931149] [2022-12-13 17:05:35,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:05:35,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 17:05:35,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:35,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 17:05:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:05:35,989 INFO L87 Difference]: Start difference. First operand 3341 states and 5625 transitions. Second operand has 17 states, 16 states have (on average 11.3125) internal successors, (181), 12 states have internal predecessors, (181), 7 states have call successors, (41), 9 states have call predecessors, (41), 6 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) [2022-12-13 17:05:48,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:48,454 INFO L93 Difference]: Finished difference Result 12466 states and 21337 transitions. [2022-12-13 17:05:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 17:05:48,455 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 11.3125) internal successors, (181), 12 states have internal predecessors, (181), 7 states have call successors, (41), 9 states have call predecessors, (41), 6 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) Word has length 187 [2022-12-13 17:05:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:48,492 INFO L225 Difference]: With dead ends: 12466 [2022-12-13 17:05:48,493 INFO L226 Difference]: Without dead ends: 9083 [2022-12-13 17:05:48,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 431 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=486, Invalid=2064, Unknown=0, NotChecked=0, Total=2550 [2022-12-13 17:05:48,506 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 4020 mSDsluCounter, 5613 mSDsCounter, 0 mSdLazyCounter, 13249 mSolverCounterSat, 1358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4123 SdHoareTripleChecker+Valid, 6181 SdHoareTripleChecker+Invalid, 14607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1358 IncrementalHoareTripleChecker+Valid, 13249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:48,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4123 Valid, 6181 Invalid, 14607 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1358 Valid, 13249 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-12-13 17:05:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9083 states. [2022-12-13 17:05:49,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9083 to 5786. [2022-12-13 17:05:49,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5786 states, 4631 states have (on average 1.6367955085294752) internal successors, (7580), 4717 states have internal predecessors, (7580), 915 states have call successors, (915), 208 states have call predecessors, (915), 239 states have return successors, (1189), 882 states have call predecessors, (1189), 905 states have call successors, (1189) [2022-12-13 17:05:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5786 states to 5786 states and 9684 transitions. [2022-12-13 17:05:49,459 INFO L78 Accepts]: Start accepts. Automaton has 5786 states and 9684 transitions. Word has length 187 [2022-12-13 17:05:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:49,460 INFO L495 AbstractCegarLoop]: Abstraction has 5786 states and 9684 transitions. [2022-12-13 17:05:49,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 11.3125) internal successors, (181), 12 states have internal predecessors, (181), 7 states have call successors, (41), 9 states have call predecessors, (41), 6 states have return successors, (39), 7 states have call predecessors, (39), 7 states have call successors, (39) [2022-12-13 17:05:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5786 states and 9684 transitions. [2022-12-13 17:05:49,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 17:05:49,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:49,463 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:05:49,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 17:05:49,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:49,664 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:49,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1232093284, now seen corresponding path program 1 times [2022-12-13 17:05:49,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:49,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955176915] [2022-12-13 17:05:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:49,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:05:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:05:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:05:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 17:05:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 17:05:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:05:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:05:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:05:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:05:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 17:05:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 17:05:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 17:05:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 17:05:49,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:49,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955176915] [2022-12-13 17:05:49,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955176915] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:49,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634132728] [2022-12-13 17:05:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:49,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:49,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:49,956 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:49,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 17:05:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:50,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:05:50,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 17:05:50,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:50,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634132728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:50,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:50,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-12-13 17:05:50,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000354394] [2022-12-13 17:05:50,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:50,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:05:50,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:50,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:05:50,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:05:50,185 INFO L87 Difference]: Start difference. First operand 5786 states and 9684 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 17:05:51,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:51,175 INFO L93 Difference]: Finished difference Result 11167 states and 18773 transitions. [2022-12-13 17:05:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:05:51,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2022-12-13 17:05:51,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:51,192 INFO L225 Difference]: With dead ends: 11167 [2022-12-13 17:05:51,192 INFO L226 Difference]: Without dead ends: 5504 [2022-12-13 17:05:51,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:05:51,211 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 1004 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:51,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 4505 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:05:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5504 states. [2022-12-13 17:05:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5504 to 5496. [2022-12-13 17:05:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5496 states, 4406 states have (on average 1.632546527462551) internal successors, (7193), 4479 states have internal predecessors, (7193), 864 states have call successors, (864), 195 states have call predecessors, (864), 225 states have return successors, (1090), 843 states have call predecessors, (1090), 854 states have call successors, (1090) [2022-12-13 17:05:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 9147 transitions. [2022-12-13 17:05:52,093 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 9147 transitions. Word has length 134 [2022-12-13 17:05:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:52,093 INFO L495 AbstractCegarLoop]: Abstraction has 5496 states and 9147 transitions. [2022-12-13 17:05:52,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 17:05:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 9147 transitions. [2022-12-13 17:05:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 17:05:52,096 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:52,096 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:05:52,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-13 17:05:52,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 17:05:52,297 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:52,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:52,297 INFO L85 PathProgramCache]: Analyzing trace with hash 889463196, now seen corresponding path program 1 times [2022-12-13 17:05:52,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:52,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595841078] [2022-12-13 17:05:52,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:52,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:05:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:05:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:05:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 17:05:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 17:05:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:05:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:05:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:05:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:05:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 17:05:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 17:05:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 17:05:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 17:05:52,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:52,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595841078] [2022-12-13 17:05:52,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595841078] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:05:52,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800346435] [2022-12-13 17:05:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:52,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:05:52,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:05:52,602 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:05:52,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 17:05:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:52,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 17:05:52,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:05:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 17:05:52,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:05:52,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800346435] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:52,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:05:52,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 12 [2022-12-13 17:05:52,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795278373] [2022-12-13 17:05:52,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:52,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:05:52,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:52,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:05:52,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:05:52,832 INFO L87 Difference]: Start difference. First operand 5496 states and 9147 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:05:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:05:53,819 INFO L93 Difference]: Finished difference Result 11052 states and 18377 transitions. [2022-12-13 17:05:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:05:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2022-12-13 17:05:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:05:53,837 INFO L225 Difference]: With dead ends: 11052 [2022-12-13 17:05:53,837 INFO L226 Difference]: Without dead ends: 5573 [2022-12-13 17:05:53,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:05:53,863 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 138 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5643 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:05:53,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5643 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:05:53,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2022-12-13 17:05:54,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5489. [2022-12-13 17:05:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5489 states, 4399 states have (on average 1.6315071607183451) internal successors, (7177), 4472 states have internal predecessors, (7177), 864 states have call successors, (864), 195 states have call predecessors, (864), 225 states have return successors, (1090), 843 states have call predecessors, (1090), 854 states have call successors, (1090) [2022-12-13 17:05:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5489 states to 5489 states and 9131 transitions. [2022-12-13 17:05:54,633 INFO L78 Accepts]: Start accepts. Automaton has 5489 states and 9131 transitions. Word has length 135 [2022-12-13 17:05:54,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:05:54,634 INFO L495 AbstractCegarLoop]: Abstraction has 5489 states and 9131 transitions. [2022-12-13 17:05:54,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:05:54,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5489 states and 9131 transitions. [2022-12-13 17:05:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-12-13 17:05:54,637 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:05:54,637 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:05:54,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 17:05:54,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b01c8c7c-d3dc-4b1c-a8e4-70bc51ecab77/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 17:05:54,837 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:05:54,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:05:54,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1591213117, now seen corresponding path program 1 times [2022-12-13 17:05:54,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:05:54,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693159305] [2022-12-13 17:05:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:05:54,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:05:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:05:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:05:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:05:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:05:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:05:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 17:05:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 17:05:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:55,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:05:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:05:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:55,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:05:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:55,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:05:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:55,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 17:05:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 17:05:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:55,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 17:05:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:05:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 17:05:55,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:05:55,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693159305] [2022-12-13 17:05:55,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693159305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:05:55,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:05:55,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:05:55,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164550416] [2022-12-13 17:05:55,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:05:55,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:05:55,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:05:55,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:05:55,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:05:55,085 INFO L87 Difference]: Start difference. First operand 5489 states and 9131 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 17:06:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:01,075 INFO L93 Difference]: Finished difference Result 12836 states and 21492 transitions. [2022-12-13 17:06:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:06:01,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2022-12-13 17:06:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:01,097 INFO L225 Difference]: With dead ends: 12836 [2022-12-13 17:06:01,097 INFO L226 Difference]: Without dead ends: 7355 [2022-12-13 17:06:01,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:06:01,110 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1059 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 3579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:01,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 1835 Invalid, 3579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3302 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 17:06:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2022-12-13 17:06:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 5461. [2022-12-13 17:06:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5461 states, 4374 states have (on average 1.6303155006858712) internal successors, (7131), 4445 states have internal predecessors, (7131), 863 states have call successors, (863), 195 states have call predecessors, (863), 223 states have return successors, (1087), 842 states have call predecessors, (1087), 853 states have call successors, (1087) [2022-12-13 17:06:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5461 states to 5461 states and 9081 transitions. [2022-12-13 17:06:02,139 INFO L78 Accepts]: Start accepts. Automaton has 5461 states and 9081 transitions. Word has length 136 [2022-12-13 17:06:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:02,139 INFO L495 AbstractCegarLoop]: Abstraction has 5461 states and 9081 transitions. [2022-12-13 17:06:02,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 17:06:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5461 states and 9081 transitions. [2022-12-13 17:06:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 17:06:02,143 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:02,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:02,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 17:06:02,144 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1361650820, now seen corresponding path program 1 times [2022-12-13 17:06:02,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:02,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012179450] [2022-12-13 17:06:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:06:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:06:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:06:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:06:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:06:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:06:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 17:06:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:06:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:06:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:06:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 17:06:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 17:06:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 17:06:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 17:06:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 17:06:02,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:02,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012179450] [2022-12-13 17:06:02,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012179450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:02,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:02,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 17:06:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486173349] [2022-12-13 17:06:02,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:02,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:06:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:02,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:06:02,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:06:02,575 INFO L87 Difference]: Start difference. First operand 5461 states and 9081 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:06:16,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:16,109 INFO L93 Difference]: Finished difference Result 17153 states and 30517 transitions. [2022-12-13 17:06:16,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 17:06:16,110 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 137 [2022-12-13 17:06:16,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:16,158 INFO L225 Difference]: With dead ends: 17153 [2022-12-13 17:06:16,159 INFO L226 Difference]: Without dead ends: 11780 [2022-12-13 17:06:16,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 17:06:16,180 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 3837 mSDsluCounter, 3770 mSDsCounter, 0 mSdLazyCounter, 9910 mSolverCounterSat, 1346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3920 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 11256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1346 IncrementalHoareTripleChecker+Valid, 9910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:16,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3920 Valid, 4290 Invalid, 11256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1346 Valid, 9910 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-12-13 17:06:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11780 states. [2022-12-13 17:06:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11780 to 8880. [2022-12-13 17:06:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8880 states, 7093 states have (on average 1.6089101931481742) internal successors, (11412), 7207 states have internal predecessors, (11412), 1389 states have call successors, (1389), 314 states have call predecessors, (1389), 397 states have return successors, (2216), 1402 states have call predecessors, (2216), 1375 states have call successors, (2216) [2022-12-13 17:06:17,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 15017 transitions. [2022-12-13 17:06:17,768 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 15017 transitions. Word has length 137 [2022-12-13 17:06:17,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:17,768 INFO L495 AbstractCegarLoop]: Abstraction has 8880 states and 15017 transitions. [2022-12-13 17:06:17,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:06:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 15017 transitions. [2022-12-13 17:06:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-13 17:06:17,771 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:17,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:17,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 17:06:17,771 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:17,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:17,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1930652146, now seen corresponding path program 1 times [2022-12-13 17:06:17,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:17,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24835518] [2022-12-13 17:06:17,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:17,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:06:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:17,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:06:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:17,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:06:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:17,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:06:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:06:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:06:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 17:06:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:06:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:06:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 17:06:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:06:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:18,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 17:06:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 17:06:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:18,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 17:06:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 17:06:18,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:18,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24835518] [2022-12-13 17:06:18,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24835518] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:18,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:18,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 17:06:18,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186589894] [2022-12-13 17:06:18,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:18,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:06:18,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:18,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:06:18,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:06:18,212 INFO L87 Difference]: Start difference. First operand 8880 states and 15017 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:06:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:36,070 INFO L93 Difference]: Finished difference Result 29516 states and 56125 transitions. [2022-12-13 17:06:36,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 17:06:36,071 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 139 [2022-12-13 17:06:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:36,148 INFO L225 Difference]: With dead ends: 29516 [2022-12-13 17:06:36,148 INFO L226 Difference]: Without dead ends: 20724 [2022-12-13 17:06:36,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2022-12-13 17:06:36,195 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3849 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 8724 mSolverCounterSat, 1326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3940 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 10050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1326 IncrementalHoareTripleChecker+Valid, 8724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:36,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3940 Valid, 3780 Invalid, 10050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1326 Valid, 8724 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-12-13 17:06:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20724 states. [2022-12-13 17:06:38,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20724 to 15644. [2022-12-13 17:06:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15644 states, 12485 states have (on average 1.598237885462555) internal successors, (19954), 12665 states have internal predecessors, (19954), 2453 states have call successors, (2453), 552 states have call predecessors, (2453), 705 states have return successors, (5088), 2514 states have call predecessors, (5088), 2431 states have call successors, (5088) [2022-12-13 17:06:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15644 states to 15644 states and 27495 transitions. [2022-12-13 17:06:38,855 INFO L78 Accepts]: Start accepts. Automaton has 15644 states and 27495 transitions. Word has length 139 [2022-12-13 17:06:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:06:38,855 INFO L495 AbstractCegarLoop]: Abstraction has 15644 states and 27495 transitions. [2022-12-13 17:06:38,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:06:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 15644 states and 27495 transitions. [2022-12-13 17:06:38,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 17:06:38,858 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:06:38,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:06:38,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 17:06:38,858 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:06:38,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:06:38,859 INFO L85 PathProgramCache]: Analyzing trace with hash -193452994, now seen corresponding path program 1 times [2022-12-13 17:06:38,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:06:38,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149625268] [2022-12-13 17:06:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:06:38,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:06:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:06:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:06:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:06:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:06:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:06:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:06:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 17:06:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:06:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:06:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:06:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:06:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 17:06:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 17:06:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 17:06:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:06:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 17:06:39,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:06:39,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149625268] [2022-12-13 17:06:39,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149625268] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:06:39,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:06:39,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:06:39,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192383326] [2022-12-13 17:06:39,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:06:39,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:06:39,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:06:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:06:39,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:06:39,207 INFO L87 Difference]: Start difference. First operand 15644 states and 27495 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:06:57,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:06:57,130 INFO L93 Difference]: Finished difference Result 53812 states and 113839 transitions. [2022-12-13 17:06:57,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:06:57,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 140 [2022-12-13 17:06:57,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:06:57,361 INFO L225 Difference]: With dead ends: 53812 [2022-12-13 17:06:57,361 INFO L226 Difference]: Without dead ends: 38256 [2022-12-13 17:06:57,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:06:57,482 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 2745 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 5506 mSolverCounterSat, 1024 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2838 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 6530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 5506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:06:57,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2838 Valid, 2404 Invalid, 6530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1024 Valid, 5506 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-12-13 17:06:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38256 states. [2022-12-13 17:07:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38256 to 29140. [2022-12-13 17:07:02,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29140 states, 23267 states have (on average 1.5903210555722698) internal successors, (37002), 23611 states have internal predecessors, (37002), 4551 states have call successors, (4551), 1028 states have call predecessors, (4551), 1321 states have return successors, (12796), 4676 states have call predecessors, (12796), 4513 states have call successors, (12796) [2022-12-13 17:07:03,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29140 states to 29140 states and 54349 transitions. [2022-12-13 17:07:03,038 INFO L78 Accepts]: Start accepts. Automaton has 29140 states and 54349 transitions. Word has length 140 [2022-12-13 17:07:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:03,038 INFO L495 AbstractCegarLoop]: Abstraction has 29140 states and 54349 transitions. [2022-12-13 17:07:03,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:07:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 29140 states and 54349 transitions. [2022-12-13 17:07:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 17:07:03,041 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:03,041 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:03,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 17:07:03,042 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash -56163867, now seen corresponding path program 1 times [2022-12-13 17:07:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:03,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066109278] [2022-12-13 17:07:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:07:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:07:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:07:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:07:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:07:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:07:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 17:07:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:07:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:07:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:07:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 17:07:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 17:07:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 17:07:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 17:07:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 17:07:03,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:03,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066109278] [2022-12-13 17:07:03,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066109278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:03,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:03,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 17:07:03,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815070273] [2022-12-13 17:07:03,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:03,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:07:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:07:03,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:07:03,394 INFO L87 Difference]: Start difference. First operand 29140 states and 54349 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:07:23,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:07:23,952 INFO L93 Difference]: Finished difference Result 67550 states and 133444 transitions. [2022-12-13 17:07:23,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 17:07:23,953 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 142 [2022-12-13 17:07:23,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:07:24,120 INFO L225 Difference]: With dead ends: 67550 [2022-12-13 17:07:24,120 INFO L226 Difference]: Without dead ends: 38520 [2022-12-13 17:07:24,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2022-12-13 17:07:24,276 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 3972 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 8667 mSolverCounterSat, 1349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4071 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 10016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1349 IncrementalHoareTripleChecker+Valid, 8667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:07:24,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4071 Valid, 3005 Invalid, 10016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1349 Valid, 8667 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-12-13 17:07:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38520 states. [2022-12-13 17:07:29,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38520 to 29150. [2022-12-13 17:07:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29150 states, 23277 states have (on average 1.5900674485543669) internal successors, (37012), 23611 states have internal predecessors, (37012), 4551 states have call successors, (4551), 1028 states have call predecessors, (4551), 1321 states have return successors, (12796), 4686 states have call predecessors, (12796), 4513 states have call successors, (12796) [2022-12-13 17:07:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29150 states to 29150 states and 54359 transitions. [2022-12-13 17:07:29,779 INFO L78 Accepts]: Start accepts. Automaton has 29150 states and 54359 transitions. Word has length 142 [2022-12-13 17:07:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:07:29,779 INFO L495 AbstractCegarLoop]: Abstraction has 29150 states and 54359 transitions. [2022-12-13 17:07:29,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 17:07:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 29150 states and 54359 transitions. [2022-12-13 17:07:29,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 17:07:29,783 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:07:29,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:07:29,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 17:07:29,784 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:07:29,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:07:29,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1579405007, now seen corresponding path program 1 times [2022-12-13 17:07:29,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:07:29,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450810361] [2022-12-13 17:07:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:07:29,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:07:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:07:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:29,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:07:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:29,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:07:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:07:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:29,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:07:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:29,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:07:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 17:07:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:07:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:07:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:07:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 17:07:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 17:07:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 17:07:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 17:07:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 17:07:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:07:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 17:07:30,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:07:30,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450810361] [2022-12-13 17:07:30,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450810361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:07:30,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:07:30,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 17:07:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17684627] [2022-12-13 17:07:30,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:07:30,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 17:07:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:07:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 17:07:30,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:07:30,120 INFO L87 Difference]: Start difference. First operand 29150 states and 54359 transitions. Second operand has 12 states, 11 states have (on average 9.181818181818182) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-12-13 17:08:39,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:08:39,877 INFO L93 Difference]: Finished difference Result 148098 states and 331056 transitions. [2022-12-13 17:08:39,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-12-13 17:08:39,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.181818181818182) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 151 [2022-12-13 17:08:39,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:08:40,703 INFO L225 Difference]: With dead ends: 148098 [2022-12-13 17:08:40,703 INFO L226 Difference]: Without dead ends: 118932 [2022-12-13 17:08:41,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1762 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=830, Invalid=4140, Unknown=0, NotChecked=0, Total=4970 [2022-12-13 17:08:41,172 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 9812 mSDsluCounter, 5846 mSDsCounter, 0 mSdLazyCounter, 27829 mSolverCounterSat, 6967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9921 SdHoareTripleChecker+Valid, 6883 SdHoareTripleChecker+Invalid, 34796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6967 IncrementalHoareTripleChecker+Valid, 27829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:08:41,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9921 Valid, 6883 Invalid, 34796 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6967 Valid, 27829 Invalid, 0 Unknown, 0 Unchecked, 35.3s Time] [2022-12-13 17:08:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118932 states. [2022-12-13 17:08:57,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118932 to 75372. [2022-12-13 17:08:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75372 states, 59833 states have (on average 1.5719084785987665) internal successors, (94052), 60823 states have internal predecessors, (94052), 11931 states have call successors, (11931), 2796 states have call predecessors, (11931), 3607 states have return successors, (37433), 12280 states have call predecessors, (37433), 11839 states have call successors, (37433) [2022-12-13 17:08:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75372 states to 75372 states and 143416 transitions. [2022-12-13 17:08:57,867 INFO L78 Accepts]: Start accepts. Automaton has 75372 states and 143416 transitions. Word has length 151 [2022-12-13 17:08:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:08:57,868 INFO L495 AbstractCegarLoop]: Abstraction has 75372 states and 143416 transitions. [2022-12-13 17:08:57,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.181818181818182) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-12-13 17:08:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 75372 states and 143416 transitions. [2022-12-13 17:08:57,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 17:08:57,871 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:08:57,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:08:57,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 17:08:57,872 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:08:57,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:08:57,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1351717036, now seen corresponding path program 1 times [2022-12-13 17:08:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:08:57,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932621407] [2022-12-13 17:08:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:08:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:08:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:08:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:08:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:08:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:08:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:08:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:08:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 17:08:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:08:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:08:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:08:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:08:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:08:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 17:08:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 17:08:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 17:08:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 17:08:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:08:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 17:08:58,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:08:58,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932621407] [2022-12-13 17:08:58,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932621407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:08:58,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:08:58,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 17:08:58,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603648898] [2022-12-13 17:08:58,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:08:58,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:08:58,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:08:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:08:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:08:58,199 INFO L87 Difference]: Start difference. First operand 75372 states and 143416 transitions. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 17:09:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:09:29,851 INFO L93 Difference]: Finished difference Result 176520 states and 378514 transitions. [2022-12-13 17:09:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:09:29,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 158 [2022-12-13 17:09:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:09:30,692 INFO L225 Difference]: With dead ends: 176520 [2022-12-13 17:09:30,692 INFO L226 Difference]: Without dead ends: 101186 [2022-12-13 17:09:31,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:09:31,496 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 2143 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 4842 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 5502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 4842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:09:31,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2238 Valid, 2159 Invalid, 5502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [660 Valid, 4842 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 17:09:31,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101186 states. [2022-12-13 17:09:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101186 to 75860. [2022-12-13 17:09:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75860 states, 60175 states have (on average 1.5660988782717076) internal successors, (94240), 61165 states have internal predecessors, (94240), 11931 states have call successors, (11931), 2942 states have call predecessors, (11931), 3753 states have return successors, (37555), 12280 states have call predecessors, (37555), 11839 states have call successors, (37555) [2022-12-13 17:09:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75860 states to 75860 states and 143726 transitions. [2022-12-13 17:09:48,008 INFO L78 Accepts]: Start accepts. Automaton has 75860 states and 143726 transitions. Word has length 158 [2022-12-13 17:09:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:09:48,008 INFO L495 AbstractCegarLoop]: Abstraction has 75860 states and 143726 transitions. [2022-12-13 17:09:48,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 6 states have internal predecessors, (106), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 17:09:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 75860 states and 143726 transitions. [2022-12-13 17:09:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 17:09:48,012 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:09:48,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:09:48,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 17:09:48,013 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:09:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:09:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1593901980, now seen corresponding path program 1 times [2022-12-13 17:09:48,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:09:48,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655071909] [2022-12-13 17:09:48,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:09:48,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:09:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:09:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:09:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:09:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:09:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:09:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:09:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 17:09:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:09:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:09:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:09:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:09:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:09:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 17:09:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 17:09:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 17:09:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 17:09:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:09:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 17:09:48,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:09:48,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655071909] [2022-12-13 17:09:48,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655071909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:09:48,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:09:48,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 17:09:48,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322895784] [2022-12-13 17:09:48,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:09:48,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 17:09:48,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:09:48,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 17:09:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:09:48,530 INFO L87 Difference]: Start difference. First operand 75860 states and 143726 transitions. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 12 states have internal predecessors, (107), 7 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2022-12-13 17:11:21,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:11:21,418 INFO L93 Difference]: Finished difference Result 312552 states and 693727 transitions. [2022-12-13 17:11:21,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-13 17:11:21,419 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 12 states have internal predecessors, (107), 7 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) Word has length 159 [2022-12-13 17:11:21,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:11:23,435 INFO L225 Difference]: With dead ends: 312552 [2022-12-13 17:11:23,435 INFO L226 Difference]: Without dead ends: 236658 [2022-12-13 17:11:24,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1651 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=931, Invalid=3899, Unknown=0, NotChecked=0, Total=4830 [2022-12-13 17:11:24,921 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 8409 mSDsluCounter, 5481 mSDsCounter, 0 mSdLazyCounter, 18481 mSolverCounterSat, 3930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8456 SdHoareTripleChecker+Valid, 6161 SdHoareTripleChecker+Invalid, 22411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3930 IncrementalHoareTripleChecker+Valid, 18481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:11:24,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8456 Valid, 6161 Invalid, 22411 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3930 Valid, 18481 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2022-12-13 17:11:25,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236658 states. [2022-12-13 17:12:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236658 to 175702. [2022-12-13 17:12:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175702 states, 137020 states have (on average 1.5449496423879725) internal successors, (211689), 139488 states have internal predecessors, (211689), 29156 states have call successors, (29156), 6856 states have call predecessors, (29156), 9525 states have return successors, (97626), 30653 states have call predecessors, (97626), 28974 states have call successors, (97626) [2022-12-13 17:12:07,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175702 states to 175702 states and 338471 transitions. [2022-12-13 17:12:07,992 INFO L78 Accepts]: Start accepts. Automaton has 175702 states and 338471 transitions. Word has length 159 [2022-12-13 17:12:07,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:12:07,992 INFO L495 AbstractCegarLoop]: Abstraction has 175702 states and 338471 transitions. [2022-12-13 17:12:07,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 12 states have internal predecessors, (107), 7 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2022-12-13 17:12:07,992 INFO L276 IsEmpty]: Start isEmpty. Operand 175702 states and 338471 transitions. [2022-12-13 17:12:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-13 17:12:07,997 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:12:07,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:12:07,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 17:12:07,997 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:12:07,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:12:07,997 INFO L85 PathProgramCache]: Analyzing trace with hash 280018354, now seen corresponding path program 1 times [2022-12-13 17:12:07,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:12:07,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930218948] [2022-12-13 17:12:07,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:12:07,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:12:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:12:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:12:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 17:12:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 17:12:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:12:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:12:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 17:12:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:12:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:12:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:12:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:12:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 17:12:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 17:12:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:12:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 17:12:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 17:12:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 17:12:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:12:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 17:12:08,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:12:08,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930218948] [2022-12-13 17:12:08,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930218948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:12:08,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:12:08,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:12:08,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123497376] [2022-12-13 17:12:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:12:08,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:12:08,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:12:08,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:12:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:12:08,286 INFO L87 Difference]: Start difference. First operand 175702 states and 338471 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 5 states have internal predecessors, (107), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-12-13 17:14:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:14:45,291 INFO L93 Difference]: Finished difference Result 638678 states and 1749664 transitions. [2022-12-13 17:14:45,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:14:45,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 5 states have internal predecessors, (107), 5 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 163 [2022-12-13 17:14:45,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:14:52,394 INFO L225 Difference]: With dead ends: 638678 [2022-12-13 17:14:52,394 INFO L226 Difference]: Without dead ends: 463064 [2022-12-13 17:14:59,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:14:59,639 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 3143 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 1065 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3228 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 6434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1065 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:14:59,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3228 Valid, 2507 Invalid, 6434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1065 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-12-13 17:15:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463064 states.