./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R --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 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb --- 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-38b53e6 [2022-11-25 18:18:39,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:18:39,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:18:39,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:18:39,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:18:39,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:18:39,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:18:39,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:18:39,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:18:39,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:18:39,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:18:39,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:18:39,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:18:39,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:18:39,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:18:39,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:18:39,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:18:39,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:18:39,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:18:39,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:18:39,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:18:39,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:18:39,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:18:39,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:18:39,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:18:39,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:18:39,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:18:39,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:18:39,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:18:39,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:18:39,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:18:39,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:18:39,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:18:39,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:18:39,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:18:39,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:18:39,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:18:39,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:18:39,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:18:39,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:18:39,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:18:39,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:18:39,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:18:39,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:18:39,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:18:39,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:18:39,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:18:39,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:18:39,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:18:39,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:18:39,596 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:18:39,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:18:39,596 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:18:39,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:18:39,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:18:39,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:18:39,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:18:39,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:18:39,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:18:39,598 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:18:39,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:18:39,598 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:18:39,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:18:39,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:18:39,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:18:39,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:18:39,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:18:39,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:18:39,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:18:39,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:18:39,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:18:39,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:18:39,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:18:39,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:18:39,606 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:18:39,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:18:39,606 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_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb [2022-11-25 18:18:39,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:18:40,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:18:40,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:18:40,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:18:40,011 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:18:40,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2022-11-25 18:18:43,041 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:18:43,223 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:18:43,231 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2022-11-25 18:18:43,242 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/data/ab20a17c0/8afb1fabe160451ea9de2f3b05de0d97/FLAG3a6b4e2ba [2022-11-25 18:18:43,257 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/data/ab20a17c0/8afb1fabe160451ea9de2f3b05de0d97 [2022-11-25 18:18:43,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:18:43,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:18:43,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:18:43,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:18:43,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:18:43,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1405eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43, skipping insertion in model container [2022-11-25 18:18:43,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:18:43,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:18:43,588 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_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2022-11-25 18:18:43,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:18:43,610 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:18:43,631 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_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2022-11-25 18:18:43,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:18:43,647 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:18:43,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43 WrapperNode [2022-11-25 18:18:43,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:18:43,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:18:43,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:18:43,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:18:43,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,685 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-25 18:18:43,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:18:43,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:18:43,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:18:43,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:18:43,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,711 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:18:43,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:18:43,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:18:43,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:18:43,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (1/1) ... [2022-11-25 18:18:43,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:18:43,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:18:43,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:18:43,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:18:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:18:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:18:43,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:18:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:18:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-25 18:18:43,815 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-25 18:18:43,886 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:18:43,888 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:18:43,997 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:18:44,004 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:18:44,004 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 18:18:44,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:44 BoogieIcfgContainer [2022-11-25 18:18:44,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:18:44,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:18:44,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:18:44,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:18:44,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:18:43" (1/3) ... [2022-11-25 18:18:44,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f55391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:44, skipping insertion in model container [2022-11-25 18:18:44,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:18:43" (2/3) ... [2022-11-25 18:18:44,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f55391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:18:44, skipping insertion in model container [2022-11-25 18:18:44,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:44" (3/3) ... [2022-11-25 18:18:44,017 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2022-11-25 18:18:44,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:18:44,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:18:44,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:18:44,106 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;@2d26431d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:18:44,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:18:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 18:18:44,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 18:18:44,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:44,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:44,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:44,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:44,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2022-11-25 18:18:44,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:44,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41846360] [2022-11-25 18:18:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:44,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:18:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:18:44,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:44,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41846360] [2022-11-25 18:18:44,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41846360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:18:44,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:18:44,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:18:44,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185648983] [2022-11-25 18:18:44,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:18:44,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:18:44,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:18:44,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:18:44,489 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:18:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:44,601 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-11-25 18:18:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:18:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-25 18:18:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:44,614 INFO L225 Difference]: With dead ends: 30 [2022-11-25 18:18:44,614 INFO L226 Difference]: Without dead ends: 18 [2022-11-25 18:18:44,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:18:44,621 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:44,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 42 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:18:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-25 18:18:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-25 18:18:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 18:18:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-25 18:18:44,664 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2022-11-25 18:18:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:44,665 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-25 18:18:44,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:18:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-25 18:18:44,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:18:44,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:44,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:44,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:18:44,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:44,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2022-11-25 18:18:44,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:44,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740510932] [2022-11-25 18:18:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:44,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:18:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:18:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:44,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740510932] [2022-11-25 18:18:44,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740510932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:18:44,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:18:44,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:18:44,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247653426] [2022-11-25 18:18:44,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:18:44,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:18:44,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:44,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:18:44,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:18:44,792 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:18:44,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:44,882 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2022-11-25 18:18:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:18:44,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-25 18:18:44,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:44,884 INFO L225 Difference]: With dead ends: 24 [2022-11-25 18:18:44,885 INFO L226 Difference]: Without dead ends: 20 [2022-11-25 18:18:44,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:18:44,887 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:44,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 30 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:18:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-25 18:18:44,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-25 18:18:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 18:18:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-11-25 18:18:44,895 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2022-11-25 18:18:44,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:44,896 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-11-25 18:18:44,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 18:18:44,896 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-11-25 18:18:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 18:18:44,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:44,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:44,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:18:44,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:44,910 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2022-11-25 18:18:44,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:44,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622653712] [2022-11-25 18:18:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:44,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:18:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 18:18:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:18:45,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:45,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622653712] [2022-11-25 18:18:45,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622653712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:18:45,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156824137] [2022-11-25 18:18:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:45,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:45,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:18:45,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:18:45,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:18:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:45,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:18:45,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:18:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:18:45,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:18:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 18:18:45,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156824137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:18:45,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:18:45,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2022-11-25 18:18:45,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300882351] [2022-11-25 18:18:45,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:18:45,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:18:45,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:45,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:18:45,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:18:45,833 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 18:18:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:45,981 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-11-25 18:18:45,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 18:18:45,982 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2022-11-25 18:18:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:45,983 INFO L225 Difference]: With dead ends: 35 [2022-11-25 18:18:45,986 INFO L226 Difference]: Without dead ends: 20 [2022-11-25 18:18:45,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-11-25 18:18:45,989 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:45,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 59 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:18:45,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-25 18:18:45,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-25 18:18:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 18:18:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-25 18:18:46,006 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2022-11-25 18:18:46,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:46,014 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-25 18:18:46,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 18:18:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-25 18:18:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 18:18:46,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:46,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:46,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 18:18:46,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:46,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2022-11-25 18:18:46,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:46,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344948566] [2022-11-25 18:18:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:46,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:46,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:18:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:46,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:46,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:18:46,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:46,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344948566] [2022-11-25 18:18:46,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344948566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:18:46,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223714289] [2022-11-25 18:18:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:46,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:46,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:18:46,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:18:46,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:18:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:46,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 18:18:46,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:18:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 18:18:46,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:18:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 18:18:46,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223714289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:18:46,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:18:46,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2022-11-25 18:18:46,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745935352] [2022-11-25 18:18:46,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:18:46,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 18:18:46,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:46,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 18:18:46,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:18:46,864 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 18:18:46,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:46,986 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-11-25 18:18:46,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:18:46,987 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 24 [2022-11-25 18:18:46,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:46,994 INFO L225 Difference]: With dead ends: 38 [2022-11-25 18:18:46,995 INFO L226 Difference]: Without dead ends: 34 [2022-11-25 18:18:46,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:18:47,000 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:47,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 44 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:18:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-25 18:18:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-25 18:18:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-25 18:18:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2022-11-25 18:18:47,024 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 24 [2022-11-25 18:18:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:47,025 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2022-11-25 18:18:47,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-25 18:18:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2022-11-25 18:18:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 18:18:47,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:47,027 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:47,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 18:18:47,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:47,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:47,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:47,241 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2022-11-25 18:18:47,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:47,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095590468] [2022-11-25 18:18:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:47,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:18:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:47,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:18:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 18:18:47,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:47,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095590468] [2022-11-25 18:18:47,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095590468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:18:47,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219752484] [2022-11-25 18:18:47,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:18:47,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:47,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:18:47,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:18:47,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:18:47,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:18:47,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:18:47,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:18:47,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:18:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:18:47,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:18:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 18:18:48,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219752484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:18:48,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:18:48,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 17 [2022-11-25 18:18:48,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089104382] [2022-11-25 18:18:48,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:18:48,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 18:18:48,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 18:18:48,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:18:48,194 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-25 18:18:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:48,421 INFO L93 Difference]: Finished difference Result 69 states and 106 transitions. [2022-11-25 18:18:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:18:48,422 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2022-11-25 18:18:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:48,423 INFO L225 Difference]: With dead ends: 69 [2022-11-25 18:18:48,423 INFO L226 Difference]: Without dead ends: 38 [2022-11-25 18:18:48,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2022-11-25 18:18:48,425 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:48,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 94 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:18:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-25 18:18:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-25 18:18:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-25 18:18:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-11-25 18:18:48,433 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2022-11-25 18:18:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:48,434 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-11-25 18:18:48,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-25 18:18:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-11-25 18:18:48,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 18:18:48,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:48,437 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:48,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:18:48,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:48,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:48,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:48,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2015531204, now seen corresponding path program 3 times [2022-11-25 18:18:48,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:48,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396291259] [2022-11-25 18:18:48,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:48,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:18:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:49,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:49,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:18:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:49,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:18:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 18:18:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:49,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396291259] [2022-11-25 18:18:49,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396291259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:18:49,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97241550] [2022-11-25 18:18:49,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:18:49,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:49,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:18:49,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:18:49,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:18:49,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 18:18:49,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:18:49,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:18:49,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:18:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-25 18:18:49,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:18:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 65 proven. 29 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-25 18:18:49,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97241550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:18:49,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:18:49,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 17 [2022-11-25 18:18:49,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440633128] [2022-11-25 18:18:49,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:18:49,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 18:18:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:49,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 18:18:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:18:49,700 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-25 18:18:49,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:49,864 INFO L93 Difference]: Finished difference Result 85 states and 124 transitions. [2022-11-25 18:18:49,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:18:49,867 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) Word has length 65 [2022-11-25 18:18:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:49,871 INFO L225 Difference]: With dead ends: 85 [2022-11-25 18:18:49,871 INFO L226 Difference]: Without dead ends: 50 [2022-11-25 18:18:49,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-11-25 18:18:49,872 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:49,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 58 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:18:49,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-25 18:18:49,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-11-25 18:18:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-25 18:18:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2022-11-25 18:18:49,894 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 65 [2022-11-25 18:18:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:49,896 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2022-11-25 18:18:49,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (17), 11 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-25 18:18:49,897 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2022-11-25 18:18:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-25 18:18:49,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:49,903 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:49,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:18:50,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 18:18:50,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:50,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:50,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1033750100, now seen corresponding path program 4 times [2022-11-25 18:18:50,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:50,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550680904] [2022-11-25 18:18:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:50,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:18:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:18:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:18:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:18:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:18:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:18:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:18:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 57 proven. 377 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2022-11-25 18:18:50,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:50,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550680904] [2022-11-25 18:18:50,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550680904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:18:50,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500050866] [2022-11-25 18:18:50,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:18:50,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:50,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:18:50,955 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:18:50,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:18:51,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:18:51,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:18:51,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 18:18:51,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:18:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 57 proven. 377 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2022-11-25 18:18:51,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:18:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 57 proven. 403 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2022-11-25 18:18:52,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500050866] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:18:52,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:18:52,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 20 [2022-11-25 18:18:52,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945203703] [2022-11-25 18:18:52,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:18:52,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 18:18:52,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:52,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 18:18:52,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2022-11-25 18:18:52,289 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (24), 10 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-25 18:18:52,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:52,499 INFO L93 Difference]: Finished difference Result 117 states and 176 transitions. [2022-11-25 18:18:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 18:18:52,500 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (24), 10 states have call predecessors, (24), 17 states have call successors, (24) Word has length 147 [2022-11-25 18:18:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:52,510 INFO L225 Difference]: With dead ends: 117 [2022-11-25 18:18:52,510 INFO L226 Difference]: Without dead ends: 113 [2022-11-25 18:18:52,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 323 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2022-11-25 18:18:52,513 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:52,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 85 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 18:18:52,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-25 18:18:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 104. [2022-11-25 18:18:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 68 states have internal predecessors, (82), 21 states have call successors, (21), 9 states have call predecessors, (21), 13 states have return successors, (56), 26 states have call predecessors, (56), 21 states have call successors, (56) [2022-11-25 18:18:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 159 transitions. [2022-11-25 18:18:52,543 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 159 transitions. Word has length 147 [2022-11-25 18:18:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:52,544 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 159 transitions. [2022-11-25 18:18:52,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (24), 10 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-25 18:18:52,545 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 159 transitions. [2022-11-25 18:18:52,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-25 18:18:52,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:52,548 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 23, 14, 14, 14, 14, 14, 14, 14, 9, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:52,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 18:18:52,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:52,754 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:52,755 INFO L85 PathProgramCache]: Analyzing trace with hash -943421620, now seen corresponding path program 5 times [2022-11-25 18:18:52,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:52,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778489392] [2022-11-25 18:18:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:52,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:18:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:18:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:18:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:18:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:18:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 18:18:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:18:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:18:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:18:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:18:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:54,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:18:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 393 proven. 617 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2022-11-25 18:18:54,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:18:54,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778489392] [2022-11-25 18:18:54,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778489392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:18:54,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055580886] [2022-11-25 18:18:54,019 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 18:18:54,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:54,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:18:54,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:18:54,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:18:54,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-11-25 18:18:54,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:18:54,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 18:18:54,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:18:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 620 proven. 476 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2022-11-25 18:18:54,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:18:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 622 proven. 510 refuted. 0 times theorem prover too weak. 1109 trivial. 0 not checked. [2022-11-25 18:18:56,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055580886] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:18:56,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:18:56,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 21] total 34 [2022-11-25 18:18:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643623089] [2022-11-25 18:18:56,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:18:56,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-25 18:18:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:18:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-25 18:18:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 18:18:56,628 INFO L87 Difference]: Start difference. First operand 104 states and 159 transitions. Second operand has 34 states, 33 states have (on average 2.757575757575758) internal successors, (91), 34 states have internal predecessors, (91), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (42), 21 states have call predecessors, (42), 24 states have call successors, (42) [2022-11-25 18:18:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:18:57,312 INFO L93 Difference]: Finished difference Result 193 states and 365 transitions. [2022-11-25 18:18:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-25 18:18:57,313 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.757575757575758) internal successors, (91), 34 states have internal predecessors, (91), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (42), 21 states have call predecessors, (42), 24 states have call successors, (42) Word has length 201 [2022-11-25 18:18:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:18:57,318 INFO L225 Difference]: With dead ends: 193 [2022-11-25 18:18:57,318 INFO L226 Difference]: Without dead ends: 95 [2022-11-25 18:18:57,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 436 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=650, Invalid=2002, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 18:18:57,328 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 130 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:18:57,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 162 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:18:57,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-25 18:18:57,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2022-11-25 18:18:57,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 58 states have internal predecessors, (62), 15 states have call successors, (15), 12 states have call predecessors, (15), 8 states have return successors, (36), 13 states have call predecessors, (36), 15 states have call successors, (36) [2022-11-25 18:18:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2022-11-25 18:18:57,360 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 201 [2022-11-25 18:18:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:18:57,360 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2022-11-25 18:18:57,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.757575757575758) internal successors, (91), 34 states have internal predecessors, (91), 24 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (42), 21 states have call predecessors, (42), 24 states have call successors, (42) [2022-11-25 18:18:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2022-11-25 18:18:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-11-25 18:18:57,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:18:57,372 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:18:57,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:18:57,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:18:57,579 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:18:57,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:18:57,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1099173212, now seen corresponding path program 6 times [2022-11-25 18:18:57,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:18:57,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538167371] [2022-11-25 18:18:57,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:18:57,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:18:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:18:59,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:18:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:01,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:01,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:19:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:19:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 18:19:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:19:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-25 18:19:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:02,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:19:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:19:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2022-11-25 18:19:03,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:03,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538167371] [2022-11-25 18:19:03,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538167371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:19:03,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978829504] [2022-11-25 18:19:03,221 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 18:19:03,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:19:03,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:19:03,223 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:19:03,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:19:03,489 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2022-11-25 18:19:03,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:19:03,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 167 conjunts are in the unsatisfiable core [2022-11-25 18:19:03,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:19:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2022-11-25 18:19:04,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:19:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2022-11-25 18:19:07,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978829504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:19:07,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:19:07,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2022-11-25 18:19:07,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643263800] [2022-11-25 18:19:07,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:19:07,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 18:19:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:07,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 18:19:07,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-11-25 18:19:07,970 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-25 18:19:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:08,447 INFO L93 Difference]: Finished difference Result 105 states and 155 transitions. [2022-11-25 18:19:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 18:19:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) Word has length 283 [2022-11-25 18:19:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:08,450 INFO L225 Difference]: With dead ends: 105 [2022-11-25 18:19:08,451 INFO L226 Difference]: Without dead ends: 101 [2022-11-25 18:19:08,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 661 SyntacticMatches, 44 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2022-11-25 18:19:08,452 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:08,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 639 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:19:08,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-25 18:19:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2022-11-25 18:19:08,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 64 states have internal predecessors, (68), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (54), 17 states have call predecessors, (54), 17 states have call successors, (54) [2022-11-25 18:19:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 139 transitions. [2022-11-25 18:19:08,466 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 139 transitions. Word has length 283 [2022-11-25 18:19:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:08,467 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 139 transitions. [2022-11-25 18:19:08,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (18), 18 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-25 18:19:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 139 transitions. [2022-11-25 18:19:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-25 18:19:08,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:08,473 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:08,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:19:08,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 18:19:08,680 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:08,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:08,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1334891743, now seen corresponding path program 7 times [2022-11-25 18:19:08,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:08,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58142501] [2022-11-25 18:19:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:08,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:19:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:19:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:19:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 18:19:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:19:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-25 18:19:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:19:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:19:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 18:19:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1307 proven. 1260 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2022-11-25 18:19:10,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:10,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58142501] [2022-11-25 18:19:10,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58142501] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:19:10,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81029021] [2022-11-25 18:19:10,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 18:19:10,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:19:10,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:19:10,501 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:19:10,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:19:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:10,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:19:10,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:19:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1091 proven. 467 refuted. 0 times theorem prover too weak. 4481 trivial. 0 not checked. [2022-11-25 18:19:10,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:19:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1091 proven. 518 refuted. 0 times theorem prover too weak. 4430 trivial. 0 not checked. [2022-11-25 18:19:13,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81029021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:19:13,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:19:13,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 17] total 35 [2022-11-25 18:19:13,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739480119] [2022-11-25 18:19:13,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:19:13,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 18:19:13,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 18:19:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2022-11-25 18:19:13,360 INFO L87 Difference]: Start difference. First operand 94 states and 139 transitions. Second operand has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (29), 1 states have call predecessors, (29), 15 states have return successors, (43), 25 states have call predecessors, (43), 24 states have call successors, (43) [2022-11-25 18:19:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:14,352 INFO L93 Difference]: Finished difference Result 227 states and 449 transitions. [2022-11-25 18:19:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-25 18:19:14,353 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (29), 1 states have call predecessors, (29), 15 states have return successors, (43), 25 states have call predecessors, (43), 24 states have call successors, (43) Word has length 324 [2022-11-25 18:19:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:14,356 INFO L225 Difference]: With dead ends: 227 [2022-11-25 18:19:14,356 INFO L226 Difference]: Without dead ends: 124 [2022-11-25 18:19:14,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 728 SyntacticMatches, 8 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=765, Invalid=2657, Unknown=0, NotChecked=0, Total=3422 [2022-11-25 18:19:14,359 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 177 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:14,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 232 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 18:19:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-25 18:19:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 110. [2022-11-25 18:19:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 76 states have internal predecessors, (80), 21 states have call successors, (21), 16 states have call predecessors, (21), 10 states have return successors, (46), 17 states have call predecessors, (46), 21 states have call successors, (46) [2022-11-25 18:19:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 147 transitions. [2022-11-25 18:19:14,373 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 147 transitions. Word has length 324 [2022-11-25 18:19:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:14,373 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 147 transitions. [2022-11-25 18:19:14,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (29), 1 states have call predecessors, (29), 15 states have return successors, (43), 25 states have call predecessors, (43), 24 states have call successors, (43) [2022-11-25 18:19:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 147 transitions. [2022-11-25 18:19:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-11-25 18:19:14,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:14,380 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:14,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 18:19:14,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:19:14,586 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:14,587 INFO L85 PathProgramCache]: Analyzing trace with hash -127946809, now seen corresponding path program 8 times [2022-11-25 18:19:14,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:14,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146768418] [2022-11-25 18:19:14,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:14,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 18:19:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:19:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:19:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-25 18:19:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:19:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-25 18:19:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:19:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-11-25 18:19:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 18:19:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 18:19:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 18:19:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 18:19:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 18:19:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 913 proven. 1281 refuted. 0 times theorem prover too weak. 4926 trivial. 0 not checked. [2022-11-25 18:19:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:16,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146768418] [2022-11-25 18:19:16,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146768418] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:19:16,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111860088] [2022-11-25 18:19:16,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:19:16,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:19:16,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:19:16,225 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:19:16,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:19:16,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:19:16,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:19:16,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 18:19:16,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:19:16,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 419 proven. 1507 refuted. 0 times theorem prover too weak. 5194 trivial. 0 not checked. [2022-11-25 18:19:16,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:19:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 419 proven. 1577 refuted. 0 times theorem prover too weak. 5124 trivial. 0 not checked. [2022-11-25 18:19:20,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111860088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:19:20,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:19:20,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 19] total 33 [2022-11-25 18:19:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025592778] [2022-11-25 18:19:20,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:19:20,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 18:19:20,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:20,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 18:19:20,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 18:19:20,037 INFO L87 Difference]: Start difference. First operand 110 states and 147 transitions. Second operand has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (43), 20 states have call predecessors, (43), 26 states have call successors, (43) [2022-11-25 18:19:20,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:20,633 INFO L93 Difference]: Finished difference Result 211 states and 294 transitions. [2022-11-25 18:19:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 18:19:20,634 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (43), 20 states have call predecessors, (43), 26 states have call successors, (43) Word has length 351 [2022-11-25 18:19:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:20,635 INFO L225 Difference]: With dead ends: 211 [2022-11-25 18:19:20,635 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 18:19:20,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 783 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=469, Invalid=1423, Unknown=0, NotChecked=0, Total=1892 [2022-11-25 18:19:20,637 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 73 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:20,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 202 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 18:19:20,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 18:19:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 18:19:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 18:19:20,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 351 [2022-11-25 18:19:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:20,639 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 18:19:20,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (43), 20 states have call predecessors, (43), 26 states have call successors, (43) [2022-11-25 18:19:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 18:19:20,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 18:19:20,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 18:19:20,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:19:20,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 18:19:20,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 18:19:21,646 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 18:19:21,646 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-25 18:19:21,646 INFO L895 garLoopResultBuilder]: At program point L31(lines 25 32) the Hoare annotation is: (<= 7 |ULTIMATE.start_main_~x~0#1|) [2022-11-25 18:19:21,646 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 18:19:21,646 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-11-25 18:19:21,647 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-25 18:19:21,647 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2022-11-25 18:19:21,647 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= 7 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 7)) [2022-11-25 18:19:21,647 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-11-25 18:19:21,647 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2022-11-25 18:19:21,647 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2022-11-25 18:19:21,647 INFO L899 garLoopResultBuilder]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2022-11-25 18:19:21,647 INFO L899 garLoopResultBuilder]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2022-11-25 18:19:21,648 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (and (not (<= fibo_~n 1)) (= fibo_~n |fibo_#in~n|)) [2022-11-25 18:19:21,648 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-25 18:19:21,648 INFO L895 garLoopResultBuilder]: At program point L13-2(line 13) the Hoare annotation is: (and (let ((.cse0 (= fibo_~n |fibo_#in~n|))) (or (and .cse0 (<= 3 |fibo_#t~ret4|) (<= 5 fibo_~n) (<= |fibo_#t~ret4| 3)) (and .cse0 (<= 6 |fibo_#in~n|)) (and (<= 4 |fibo_#in~n|) .cse0 (<= |fibo_#t~ret4| 2) (<= fibo_~n 4) (<= 2 |fibo_#t~ret4|)) (and .cse0 (<= |fibo_#t~ret4| 1) (<= 1 |fibo_#t~ret4|) (<= fibo_~n 3)))) (not (<= fibo_~n 1)) (or (and (<= |fibo_#t~ret4| 5) (<= 5 |fibo_#t~ret4|) (<= fibo_~n 6)) (<= 8 |fibo_#in~n|) (and (<= |fibo_#t~ret4| 8) (<= 7 fibo_~n) (<= 8 |fibo_#t~ret4|)) (<= fibo_~n 5))) [2022-11-25 18:19:21,648 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 14) no Hoare annotation was computed. [2022-11-25 18:19:21,648 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2022-11-25 18:19:21,648 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 14) no Hoare annotation was computed. [2022-11-25 18:19:21,649 INFO L902 garLoopResultBuilder]: At program point fiboENTRY(lines 7 15) the Hoare annotation is: true [2022-11-25 18:19:21,652 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-11-25 18:19:21,655 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:19:21,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:19:21 BoogieIcfgContainer [2022-11-25 18:19:21,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:19:21,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:19:21,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:19:21,674 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:19:21,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:18:44" (3/4) ... [2022-11-25 18:19:21,677 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:19:21,682 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2022-11-25 18:19:21,686 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-25 18:19:21,686 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-25 18:19:21,686 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 18:19:21,687 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:19:21,718 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:19:21,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:19:21,719 INFO L158 Benchmark]: Toolchain (without parser) took 38457.73ms. Allocated memory was 159.4MB in the beginning and 488.6MB in the end (delta: 329.3MB). Free memory was 123.7MB in the beginning and 418.1MB in the end (delta: -294.5MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2022-11-25 18:19:21,719 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:19:21,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 385.76ms. Allocated memory is still 159.4MB. Free memory was 123.7MB in the beginning and 128.2MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 18:19:21,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.11ms. Allocated memory is still 159.4MB. Free memory was 127.9MB in the beginning and 126.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:19:21,720 INFO L158 Benchmark]: Boogie Preprocessor took 29.28ms. Allocated memory is still 159.4MB. Free memory was 126.5MB in the beginning and 125.7MB in the end (delta: 801.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:19:21,720 INFO L158 Benchmark]: RCFGBuilder took 290.61ms. Allocated memory is still 159.4MB. Free memory was 125.7MB in the beginning and 116.4MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:19:21,721 INFO L158 Benchmark]: TraceAbstraction took 37662.98ms. Allocated memory was 159.4MB in the beginning and 488.6MB in the end (delta: 329.3MB). Free memory was 115.7MB in the beginning and 420.2MB in the end (delta: -304.5MB). Peak memory consumption was 276.5MB. Max. memory is 16.1GB. [2022-11-25 18:19:21,721 INFO L158 Benchmark]: Witness Printer took 44.85ms. Allocated memory is still 488.6MB. Free memory was 420.2MB in the beginning and 418.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:19:21,723 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 385.76ms. Allocated memory is still 159.4MB. Free memory was 123.7MB in the beginning and 128.2MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.11ms. Allocated memory is still 159.4MB. Free memory was 127.9MB in the beginning and 126.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.28ms. Allocated memory is still 159.4MB. Free memory was 126.5MB in the beginning and 125.7MB in the end (delta: 801.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 290.61ms. Allocated memory is still 159.4MB. Free memory was 125.7MB in the beginning and 116.4MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 37662.98ms. Allocated memory was 159.4MB in the beginning and 488.6MB in the end (delta: 329.3MB). Free memory was 115.7MB in the beginning and 420.2MB in the end (delta: -304.5MB). Peak memory consumption was 276.5MB. Max. memory is 16.1GB. * Witness Printer took 44.85ms. Allocated memory is still 488.6MB. Free memory was 420.2MB in the beginning and 418.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 37.6s, OverallIterations: 11, TraceHistogramMax: 51, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 620 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 572 mSDsluCounter, 1647 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1391 mSDsCounter, 925 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3003 IncrementalHoareTripleChecker+Invalid, 3928 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 925 mSolverCounterUnsat, 256 mSDtfsCounter, 3003 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3595 GetRequests, 3245 SyntacticMatches, 86 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3490 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=10, InterpolantAutomatonStates: 180, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 46 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 272 PreInvPairs, 405 NumberOfFragments, 101 HoareAnnotationTreeSize, 272 FomulaSimplifications, 1120 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 2436 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 28.8s InterpolantComputationTime, 2931 NumberOfCodeBlocks, 2851 NumberOfCodeBlocksAsserted, 86 NumberOfCheckSat, 4357 ConstructedInterpolants, 0 QuantifiedInterpolants, 9749 SizeOfPredicates, 40 NumberOfNonLiveVariables, 3199 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 29 InterpolantComputations, 2 PerfectInterpolantSequences, 50054/64155 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 7 <= x RESULT: Ultimate proved your program to be correct! [2022-11-25 18:19:21,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bd68a4c-c7fe-43bf-8728-a92a10e38b7f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE