./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_7-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --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-8393723 [2022-11-18 18:32:50,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:32:50,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:32:50,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:32:50,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:32:50,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:32:50,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:32:50,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:32:50,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:32:50,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:32:50,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:32:50,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:32:50,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:32:50,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:32:50,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:32:50,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:32:50,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:32:50,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:32:50,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:32:50,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:32:50,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:32:50,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:32:50,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:32:50,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:32:50,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:32:50,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:32:50,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:32:50,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:32:50,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:32:50,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:32:50,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:32:50,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:32:50,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:32:50,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:32:50,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:32:50,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:32:50,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:32:50,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:32:50,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:32:50,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:32:50,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:32:50,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:32:50,647 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:32:50,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:32:50,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:32:50,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:32:50,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:32:50,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:32:50,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:32:50,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:32:50,651 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:32:50,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:32:50,653 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:32:50,653 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:32:50,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:32:50,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:32:50,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:32:50,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:32:50,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:32:50,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:32:50,655 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:32:50,655 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:32:50,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:32:50,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:32:50,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:32:50,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:32:50,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:32:50,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:32:50,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:32:50,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:32:50,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:32:50,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:32:50,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:32:50,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:32:50,660 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:32:50,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:32:50,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:32:50,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb [2022-11-18 18:32:50,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:32:51,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:32:51,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:32:51,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:32:51,012 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:32:51,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2022-11-18 18:32:51,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/data/82167af34/54761b46428441f79c8fb7d7f1f7c0f3/FLAG4e96f1dc8 [2022-11-18 18:32:51,547 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:32:51,548 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2022-11-18 18:32:51,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/data/82167af34/54761b46428441f79c8fb7d7f1f7c0f3/FLAG4e96f1dc8 [2022-11-18 18:32:51,937 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/data/82167af34/54761b46428441f79c8fb7d7f1f7c0f3 [2022-11-18 18:32:51,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:32:51,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:32:51,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:32:51,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:32:51,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:32:51,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:32:51" (1/1) ... [2022-11-18 18:32:51,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec662b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:51, skipping insertion in model container [2022-11-18 18:32:51,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:32:51" (1/1) ... [2022-11-18 18:32:51,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:32:51,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:32:52,210 WARN L234 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_ecf3bab7-495a-499b-ae8c-ed12e935edea/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2022-11-18 18:32:52,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:32:52,227 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:32:52,243 WARN L234 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_ecf3bab7-495a-499b-ae8c-ed12e935edea/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2022-11-18 18:32:52,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:32:52,259 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:32:52,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52 WrapperNode [2022-11-18 18:32:52,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:32:52,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:32:52,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:32:52,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:32:52,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,298 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-18 18:32:52,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:32:52,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:32:52,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:32:52,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:32:52,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,324 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:32:52,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:32:52,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:32:52,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:32:52,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (1/1) ... [2022-11-18 18:32:52,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:32:52,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:52,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:32:52,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:32:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:32:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:32:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:32:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:32:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-18 18:32:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-18 18:32:52,501 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:32:52,504 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:32:52,698 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:32:52,704 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:32:52,704 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:32:52,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:52 BoogieIcfgContainer [2022-11-18 18:32:52,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:32:52,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:32:52,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:32:52,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:32:52,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:32:51" (1/3) ... [2022-11-18 18:32:52,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37696305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:32:52, skipping insertion in model container [2022-11-18 18:32:52,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:32:52" (2/3) ... [2022-11-18 18:32:52,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37696305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:32:52, skipping insertion in model container [2022-11-18 18:32:52,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:52" (3/3) ... [2022-11-18 18:32:52,716 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2022-11-18 18:32:52,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:32:52,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 18:32:52,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:32:52,821 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;@4f5374af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:32:52,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 18:32:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 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) [2022-11-18 18:32:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:32:52,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:52,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:52,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:32:52,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:52,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1840307469, now seen corresponding path program 1 times [2022-11-18 18:32:52,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:52,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273700933] [2022-11-18 18:32:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:52,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:53,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:53,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273700933] [2022-11-18 18:32:53,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273700933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:53,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:53,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:32:53,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957749770] [2022-11-18 18:32:53,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:53,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:32:53,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:53,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:32:53,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:32:53,205 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 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, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:53,313 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-18 18:32:53,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:53,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:32:53,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:53,323 INFO L225 Difference]: With dead ends: 35 [2022-11-18 18:32:53,324 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 18:32:53,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:32:53,331 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:53,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 42 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:32:53,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 18:32:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-18 18:32:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:32:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-18 18:32:53,376 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2022-11-18 18:32:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:53,376 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-18 18:32:53,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-18 18:32:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:32:53,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:53,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:53,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:32:53,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:32:53,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:53,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1214956750, now seen corresponding path program 1 times [2022-11-18 18:32:53,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:53,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817204012] [2022-11-18 18:32:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:53,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:53,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:53,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817204012] [2022-11-18 18:32:53,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817204012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:53,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:53,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:32:53,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336513554] [2022-11-18 18:32:53,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:32:53,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:32:53,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:53,456 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:53,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:53,516 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-18 18:32:53,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:32:53,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 18:32:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:53,519 INFO L225 Difference]: With dead ends: 24 [2022-11-18 18:32:53,519 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 18:32:53,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:32:53,521 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:53,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:32:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 18:32:53,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-11-18 18:32:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:32:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-18 18:32:53,530 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2022-11-18 18:32:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:53,531 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-18 18:32:53,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-18 18:32:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 18:32:53,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:53,533 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:53,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:32:53,533 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:32:53,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:53,534 INFO L85 PathProgramCache]: Analyzing trace with hash 199265907, now seen corresponding path program 1 times [2022-11-18 18:32:53,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:53,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020439459] [2022-11-18 18:32:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:53,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:32:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:32:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:32:53,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:53,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020439459] [2022-11-18 18:32:53,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020439459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:53,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:53,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:32:53,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600769334] [2022-11-18 18:32:53,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:53,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:32:53,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:53,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:32:53,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:32:53,924 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:32:53,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:53,973 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-11-18 18:32:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:53,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-18 18:32:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:53,975 INFO L225 Difference]: With dead ends: 36 [2022-11-18 18:32:53,976 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 18:32:53,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:32:53,978 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:53,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:32:53,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 18:32:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-11-18 18:32:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 18:32:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-18 18:32:53,988 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2022-11-18 18:32:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:53,988 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-18 18:32:53,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:32:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-18 18:32:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 18:32:53,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:53,990 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:53,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:32:53,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:32:53,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1894113426, now seen corresponding path program 1 times [2022-11-18 18:32:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:53,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127288631] [2022-11-18 18:32:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:32:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:32:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:32:54,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:54,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127288631] [2022-11-18 18:32:54,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127288631] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:54,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84900393] [2022-11-18 18:32:54,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:54,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:54,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:54,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:54,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:32:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:54,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:32:54,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:54,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:54,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84900393] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:54,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:32:54,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-18 18:32:54,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022101218] [2022-11-18 18:32:54,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:54,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 18:32:54,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:54,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 18:32:54,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:32:54,613 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 18:32:55,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:55,251 INFO L93 Difference]: Finished difference Result 178 states and 248 transitions. [2022-11-18 18:32:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:32:55,252 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-11-18 18:32:55,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:55,254 INFO L225 Difference]: With dead ends: 178 [2022-11-18 18:32:55,255 INFO L226 Difference]: Without dead ends: 145 [2022-11-18 18:32:55,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-11-18 18:32:55,258 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 213 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:55,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 258 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:32:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-18 18:32:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 129. [2022-11-18 18:32:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 100 states have (on average 1.11) internal successors, (111), 102 states have internal predecessors, (111), 17 states have call successors, (17), 5 states have call predecessors, (17), 10 states have return successors, (46), 21 states have call predecessors, (46), 16 states have call successors, (46) [2022-11-18 18:32:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2022-11-18 18:32:55,284 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 30 [2022-11-18 18:32:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:55,285 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2022-11-18 18:32:55,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 18:32:55,285 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2022-11-18 18:32:55,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 18:32:55,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:55,287 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:55,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:55,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:55,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:32:55,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1184531600, now seen corresponding path program 2 times [2022-11-18 18:32:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:55,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279189103] [2022-11-18 18:32:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:55,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 18:32:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 18:32:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 18:32:55,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:55,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279189103] [2022-11-18 18:32:55,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279189103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:55,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027484088] [2022-11-18 18:32:55,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:32:55,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:55,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:55,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:55,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:32:55,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:32:55,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:32:55,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:32:55,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 18:32:55,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:32:55,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027484088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:55,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:32:55,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 18:32:55,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759551388] [2022-11-18 18:32:55,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:55,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:32:55,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:55,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:32:55,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:55,837 INFO L87 Difference]: Start difference. First operand 129 states and 174 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:32:55,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:55,873 INFO L93 Difference]: Finished difference Result 143 states and 190 transitions. [2022-11-18 18:32:55,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:55,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-11-18 18:32:55,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:55,876 INFO L225 Difference]: With dead ends: 143 [2022-11-18 18:32:55,876 INFO L226 Difference]: Without dead ends: 142 [2022-11-18 18:32:55,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:32:55,878 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:55,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:32:55,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-18 18:32:55,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 133. [2022-11-18 18:32:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 104 states have (on average 1.1057692307692308) internal successors, (115), 104 states have internal predecessors, (115), 17 states have call successors, (17), 5 states have call predecessors, (17), 10 states have return successors, (46), 23 states have call predecessors, (46), 16 states have call successors, (46) [2022-11-18 18:32:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 178 transitions. [2022-11-18 18:32:55,901 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 178 transitions. Word has length 42 [2022-11-18 18:32:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:55,901 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 178 transitions. [2022-11-18 18:32:55,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:32:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 178 transitions. [2022-11-18 18:32:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 18:32:55,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:55,903 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:55,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:56,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:56,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:32:56,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:56,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1934226135, now seen corresponding path program 1 times [2022-11-18 18:32:56,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:56,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108642998] [2022-11-18 18:32:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:56,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 18:32:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 18:32:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 18:32:56,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:56,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108642998] [2022-11-18 18:32:56,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108642998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:56,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514251710] [2022-11-18 18:32:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:56,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:56,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:56,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:56,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:32:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:56,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:32:56,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:56,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:32:56,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514251710] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:56,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:32:56,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 21 [2022-11-18 18:32:56,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377712276] [2022-11-18 18:32:56,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:56,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 18:32:56,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:56,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 18:32:56,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:32:56,889 INFO L87 Difference]: Start difference. First operand 133 states and 178 transitions. Second operand has 21 states, 19 states have (on average 3.263157894736842) internal successors, (62), 16 states have internal predecessors, (62), 10 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 18:32:57,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:57,880 INFO L93 Difference]: Finished difference Result 393 states and 584 transitions. [2022-11-18 18:32:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:32:57,881 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.263157894736842) internal successors, (62), 16 states have internal predecessors, (62), 10 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2022-11-18 18:32:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:57,891 INFO L225 Difference]: With dead ends: 393 [2022-11-18 18:32:57,892 INFO L226 Difference]: Without dead ends: 275 [2022-11-18 18:32:57,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 75 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=989, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 18:32:57,901 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 172 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:57,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 406 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:32:57,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-18 18:32:57,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 232. [2022-11-18 18:32:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 183 states have (on average 1.092896174863388) internal successors, (200), 181 states have internal predecessors, (200), 29 states have call successors, (29), 8 states have call predecessors, (29), 18 states have return successors, (111), 42 states have call predecessors, (111), 28 states have call successors, (111) [2022-11-18 18:32:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 340 transitions. [2022-11-18 18:32:57,941 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 340 transitions. Word has length 43 [2022-11-18 18:32:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:57,942 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 340 transitions. [2022-11-18 18:32:57,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.263157894736842) internal successors, (62), 16 states have internal predecessors, (62), 10 states have call successors, (13), 7 states have call predecessors, (13), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 18:32:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 340 transitions. [2022-11-18 18:32:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 18:32:57,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:57,944 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:57,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:58,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:32:58,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:32:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:58,145 INFO L85 PathProgramCache]: Analyzing trace with hash 213043105, now seen corresponding path program 1 times [2022-11-18 18:32:58,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:58,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164443824] [2022-11-18 18:32:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:58,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 18:32:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 18:32:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-18 18:32:58,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:58,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164443824] [2022-11-18 18:32:58,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164443824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:32:58,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:32:58,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:32:58,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257973393] [2022-11-18 18:32:58,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:32:58,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:32:58,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:58,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:32:58,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:32:58,285 INFO L87 Difference]: Start difference. First operand 232 states and 340 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:32:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:58,355 INFO L93 Difference]: Finished difference Result 249 states and 363 transitions. [2022-11-18 18:32:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:32:58,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2022-11-18 18:32:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:58,360 INFO L225 Difference]: With dead ends: 249 [2022-11-18 18:32:58,360 INFO L226 Difference]: Without dead ends: 247 [2022-11-18 18:32:58,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:32:58,361 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:58,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 99 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:32:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-18 18:32:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 239. [2022-11-18 18:32:58,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 189 states have (on average 1.08994708994709) internal successors, (206), 186 states have internal predecessors, (206), 30 states have call successors, (30), 8 states have call predecessors, (30), 18 states have return successors, (117), 44 states have call predecessors, (117), 29 states have call successors, (117) [2022-11-18 18:32:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 353 transitions. [2022-11-18 18:32:58,390 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 353 transitions. Word has length 55 [2022-11-18 18:32:58,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:58,391 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 353 transitions. [2022-11-18 18:32:58,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:32:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 353 transitions. [2022-11-18 18:32:58,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 18:32:58,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:58,395 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 18:32:58,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:32:58,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:32:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash -757458600, now seen corresponding path program 1 times [2022-11-18 18:32:58,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:32:58,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361508233] [2022-11-18 18:32:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:58,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:32:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 18:32:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:58,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 18:32:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:32:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:32:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:58,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:32:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-18 18:32:58,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:32:58,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361508233] [2022-11-18 18:32:58,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361508233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:58,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870409103] [2022-11-18 18:32:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:58,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:32:58,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:32:58,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:32:58,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:32:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:58,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:32:58,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 138 proven. 102 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 18:32:58,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 40 proven. 220 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 18:32:59,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870409103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:59,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:32:59,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 21 [2022-11-18 18:32:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274600782] [2022-11-18 18:32:59,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:59,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 18:32:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 18:32:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:32:59,308 INFO L87 Difference]: Start difference. First operand 239 states and 353 transitions. Second operand has 21 states, 20 states have (on average 3.7) internal successors, (74), 15 states have internal predecessors, (74), 10 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-18 18:32:59,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:59,917 INFO L93 Difference]: Finished difference Result 515 states and 792 transitions. [2022-11-18 18:32:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:32:59,918 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.7) internal successors, (74), 15 states have internal predecessors, (74), 10 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 88 [2022-11-18 18:32:59,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:59,920 INFO L225 Difference]: With dead ends: 515 [2022-11-18 18:32:59,921 INFO L226 Difference]: Without dead ends: 291 [2022-11-18 18:32:59,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 162 SyntacticMatches, 14 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2022-11-18 18:32:59,925 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 232 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:59,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 303 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:32:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-18 18:32:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 258. [2022-11-18 18:32:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 203 states have (on average 1.0935960591133005) internal successors, (222), 202 states have internal predecessors, (222), 33 states have call successors, (33), 9 states have call predecessors, (33), 20 states have return successors, (118), 46 states have call predecessors, (118), 32 states have call successors, (118) [2022-11-18 18:32:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 373 transitions. [2022-11-18 18:32:59,986 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 373 transitions. Word has length 88 [2022-11-18 18:32:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:59,989 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 373 transitions. [2022-11-18 18:32:59,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.7) internal successors, (74), 15 states have internal predecessors, (74), 10 states have call successors, (15), 8 states have call predecessors, (15), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-18 18:32:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 373 transitions. [2022-11-18 18:32:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 18:33:00,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:00,001 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:00,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:00,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:00,208 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:33:00,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1051954407, now seen corresponding path program 2 times [2022-11-18 18:33:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:00,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545153102] [2022-11-18 18:33:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:00,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 18:33:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 18:33:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:33:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 105 proven. 88 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 18:33:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:00,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545153102] [2022-11-18 18:33:00,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545153102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:00,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41145230] [2022-11-18 18:33:00,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:33:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:00,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:00,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:33:00,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:33:00,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:00,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:33:00,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 100 proven. 91 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 18:33:00,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:33:01,049 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 100 proven. 91 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 18:33:01,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41145230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:33:01,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:33:01,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 22 [2022-11-18 18:33:01,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830818896] [2022-11-18 18:33:01,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:33:01,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:33:01,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:01,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:33:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:33:01,054 INFO L87 Difference]: Start difference. First operand 258 states and 373 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 16 states have internal predecessors, (69), 10 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 18:33:01,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:01,708 INFO L93 Difference]: Finished difference Result 403 states and 584 transitions. [2022-11-18 18:33:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 18:33:01,708 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 16 states have internal predecessors, (69), 10 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-11-18 18:33:01,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:01,711 INFO L225 Difference]: With dead ends: 403 [2022-11-18 18:33:01,711 INFO L226 Difference]: Without dead ends: 148 [2022-11-18 18:33:01,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 145 SyntacticMatches, 14 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 18:33:01,716 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 389 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:01,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 124 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:33:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-18 18:33:01,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 134. [2022-11-18 18:33:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 106 states have internal predecessors, (120), 17 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 18:33:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2022-11-18 18:33:01,729 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 74 [2022-11-18 18:33:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:01,730 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2022-11-18 18:33:01,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 16 states have internal predecessors, (69), 10 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 18:33:01,730 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2022-11-18 18:33:01,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:33:01,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:01,733 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:01,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 18:33:01,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:01,939 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:33:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:01,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1305547579, now seen corresponding path program 3 times [2022-11-18 18:33:01,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:01,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477476543] [2022-11-18 18:33:01,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:01,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 18:33:02,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:02,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477476543] [2022-11-18 18:33:02,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477476543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:02,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916455450] [2022-11-18 18:33:02,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:33:02,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:02,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:02,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:02,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:33:02,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 18:33:02,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:02,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:33:02,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-18 18:33:02,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:33:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 18:33:02,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916455450] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:33:02,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:33:02,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2022-11-18 18:33:02,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37483293] [2022-11-18 18:33:02,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:33:02,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:33:02,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:02,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:33:02,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:33:02,529 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 18:33:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:02,632 INFO L93 Difference]: Finished difference Result 137 states and 153 transitions. [2022-11-18 18:33:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:33:02,633 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2022-11-18 18:33:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:02,634 INFO L225 Difference]: With dead ends: 137 [2022-11-18 18:33:02,634 INFO L226 Difference]: Without dead ends: 136 [2022-11-18 18:33:02,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:33:02,636 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:02,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 149 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-18 18:33:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2022-11-18 18:33:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 106 states have (on average 1.0943396226415094) internal successors, (116), 106 states have internal predecessors, (116), 17 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 18:33:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2022-11-18 18:33:02,646 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 68 [2022-11-18 18:33:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:02,647 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2022-11-18 18:33:02,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 18:33:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2022-11-18 18:33:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 18:33:02,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:02,648 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:02,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:02,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:02,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:33:02,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:02,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1817269214, now seen corresponding path program 1 times [2022-11-18 18:33:02,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:02,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392239034] [2022-11-18 18:33:02,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:02,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:33:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:33:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-18 18:33:02,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:02,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392239034] [2022-11-18 18:33:02,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392239034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:33:02,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:33:02,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:33:02,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622785747] [2022-11-18 18:33:02,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:33:02,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:33:02,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:02,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:33:02,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:33:02,949 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:33:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:02,984 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2022-11-18 18:33:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:33:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 69 [2022-11-18 18:33:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:02,986 INFO L225 Difference]: With dead ends: 135 [2022-11-18 18:33:02,986 INFO L226 Difference]: Without dead ends: 134 [2022-11-18 18:33:02,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:33:02,988 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:02,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 50 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:33:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-18 18:33:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-18 18:33:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 106 states have (on average 1.0754716981132075) internal successors, (114), 106 states have internal predecessors, (114), 17 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 18:33:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 147 transitions. [2022-11-18 18:33:03,002 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 147 transitions. Word has length 69 [2022-11-18 18:33:03,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:03,003 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 147 transitions. [2022-11-18 18:33:03,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 18:33:03,003 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 147 transitions. [2022-11-18 18:33:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 18:33:03,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:03,004 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 8, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2022-11-18 18:33:03,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:33:03,005 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:33:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1276330563, now seen corresponding path program 2 times [2022-11-18 18:33:03,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:03,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178178342] [2022-11-18 18:33:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:03,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:03,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 18:33:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:03,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:33:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 18:33:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:03,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-18 18:33:03,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:03,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178178342] [2022-11-18 18:33:03,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178178342] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:03,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936531693] [2022-11-18 18:33:03,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:33:03,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:03,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:03,379 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:03,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:33:03,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:33:03,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:03,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:33:03,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 56 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2022-11-18 18:33:03,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:33:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 58 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-18 18:33:04,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936531693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:33:04,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:33:04,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 18:33:04,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430516598] [2022-11-18 18:33:04,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:33:04,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 18:33:04,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 18:33:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:33:04,034 INFO L87 Difference]: Start difference. First operand 134 states and 147 transitions. Second operand has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (15), 12 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-18 18:33:04,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:04,118 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2022-11-18 18:33:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:33:04,119 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (15), 12 states have call predecessors, (15), 5 states have call successors, (15) Word has length 102 [2022-11-18 18:33:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:04,120 INFO L225 Difference]: With dead ends: 134 [2022-11-18 18:33:04,120 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 18:33:04,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 216 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:33:04,121 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:04,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 127 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 18:33:04,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-18 18:33:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 104 states have internal predecessors, (108), 17 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 18:33:04,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 141 transitions. [2022-11-18 18:33:04,131 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 141 transitions. Word has length 102 [2022-11-18 18:33:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:04,132 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 141 transitions. [2022-11-18 18:33:04,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (15), 12 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-18 18:33:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions. [2022-11-18 18:33:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-18 18:33:04,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:04,134 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1, 1] [2022-11-18 18:33:04,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:04,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:04,339 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:33:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:04,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1394508358, now seen corresponding path program 4 times [2022-11-18 18:33:04,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:04,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274519363] [2022-11-18 18:33:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:04,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 18:33:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:04,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:04,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:04,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:33:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 18:33:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:33:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-18 18:33:05,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:05,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274519363] [2022-11-18 18:33:05,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274519363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:05,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867103961] [2022-11-18 18:33:05,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:33:05,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:05,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:05,159 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:05,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:33:05,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:33:05,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:05,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 18:33:05,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2022-11-18 18:33:05,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:33:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 144 proven. 122 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2022-11-18 18:33:06,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867103961] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:33:06,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:33:06,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2022-11-18 18:33:06,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822689074] [2022-11-18 18:33:06,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:33:06,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 18:33:06,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:06,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 18:33:06,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-11-18 18:33:06,968 INFO L87 Difference]: Start difference. First operand 132 states and 141 transitions. Second operand has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-18 18:33:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:07,082 INFO L93 Difference]: Finished difference Result 133 states and 141 transitions. [2022-11-18 18:33:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:33:07,082 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 154 [2022-11-18 18:33:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:07,084 INFO L225 Difference]: With dead ends: 133 [2022-11-18 18:33:07,084 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 18:33:07,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 322 SyntacticMatches, 16 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:33:07,086 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:07,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 188 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:07,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 18:33:07,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-18 18:33:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 104 states have internal predecessors, (106), 17 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-18 18:33:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 139 transitions. [2022-11-18 18:33:07,095 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 139 transitions. Word has length 154 [2022-11-18 18:33:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:07,096 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 139 transitions. [2022-11-18 18:33:07,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-18 18:33:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 139 transitions. [2022-11-18 18:33:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-11-18 18:33:07,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:07,103 INFO L195 NwaCegarLoop]: trace histogram [41, 40, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1, 1] [2022-11-18 18:33:07,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:07,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:07,311 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 18:33:07,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1078889652, now seen corresponding path program 5 times [2022-11-18 18:33:07,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:07,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067788562] [2022-11-18 18:33:07,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:07,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:33:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:33:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 18:33:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:33:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 18:33:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:33:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-11-18 18:33:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:33:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 18:33:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 18:33:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 18:33:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:33:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:33:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5609 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2022-11-18 18:33:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:11,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067788562] [2022-11-18 18:33:11,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067788562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:11,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890543354] [2022-11-18 18:33:11,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:33:11,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:11,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:11,747 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:11,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:33:12,009 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2022-11-18 18:33:12,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:12,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-18 18:33:12,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5609 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2022-11-18 18:33:12,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:33:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5609 backedges. 1149 proven. 996 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2022-11-18 18:33:21,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890543354] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:33:21,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:33:21,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2022-11-18 18:33:21,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358870275] [2022-11-18 18:33:21,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:33:21,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 18:33:21,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:33:21,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 18:33:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 18:33:21,050 INFO L87 Difference]: Start difference. First operand 132 states and 139 transitions. Second operand has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-18 18:33:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:21,146 INFO L93 Difference]: Finished difference Result 132 states and 139 transitions. [2022-11-18 18:33:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:33:21,146 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 397 [2022-11-18 18:33:21,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:21,147 INFO L225 Difference]: With dead ends: 132 [2022-11-18 18:33:21,148 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 18:33:21,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 852 SyntacticMatches, 62 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2195 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 18:33:21,149 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:21,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 117 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:33:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 18:33:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 18:33:21,151 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) [2022-11-18 18:33:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 18:33:21,151 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 397 [2022-11-18 18:33:21,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:21,151 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:33:21,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-18 18:33:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 18:33:21,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 18:33:21,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-18 18:33:21,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-18 18:33:21,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-18 18:33:21,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-18 18:33:21,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-18 18:33:21,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-18 18:33:21,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:21,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:33:21,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 18:33:22,036 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 18:33:22,036 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 18:33:22,036 INFO L895 garLoopResultBuilder]: At program point L31(lines 25 32) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 7) [2022-11-18 18:33:22,036 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 18:33:22,037 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-11-18 18:33:22,037 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 18:33:22,037 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2022-11-18 18:33:22,037 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)) [2022-11-18 18:33:22,037 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-11-18 18:33:22,037 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2022-11-18 18:33:22,037 INFO L899 garLoopResultBuilder]: For program point fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,037 INFO L899 garLoopResultBuilder]: For program point fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,037 INFO L899 garLoopResultBuilder]: For program point fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,038 INFO L899 garLoopResultBuilder]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2022-11-18 18:33:22,038 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,038 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,038 INFO L895 garLoopResultBuilder]: At program point L13-2(line 13) the Hoare annotation is: (and (or (< 1 fibo_~n) (not (<= |fibo_#in~n| 2))) (or (= fibo_~n |fibo_#in~n|) (not (<= |fibo_#in~n| 7)))) [2022-11-18 18:33:22,038 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,038 INFO L899 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,038 INFO L899 garLoopResultBuilder]: For program point L13-5(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,038 INFO L895 garLoopResultBuilder]: At program point L13-6(line 13) the Hoare annotation is: (let ((.cse1 (<= 2 |fibo_#t~ret4|)) (.cse0 (= fibo_~n |fibo_#in~n|))) (and (or (and (<= |fibo_#t~ret4| 5) .cse0 .cse1) (not (<= 6 |fibo_#in~n|)) (not (<= |fibo_#in~n| 6))) (or (and .cse0 .cse1 (<= |fibo_#t~ret4| 3)) (not (<= |fibo_#in~n| 5)) (not (<= 5 |fibo_#in~n|))) (or (and (<= |fibo_#t~ret4| 1) (<= |fibo_#in~n| fibo_~n) (<= 1 |fibo_#t~ret4|) (<= fibo_~n 3)) (not (<= |fibo_#in~n| 3))) (or (not (<= 7 |fibo_#in~n|)) (not (<= |fibo_#in~n| 7)) (and (<= |fibo_#t~ret4| 8) .cse0 .cse1)) (or (not (<= |fibo_#in~n| 4)) (not (<= 4 |fibo_#in~n|)) (and .cse0 (<= |fibo_#t~ret4| 2) .cse1)) (or (and .cse0 (< 1 fibo_~n)) (not (<= |fibo_#in~n| 2))))) [2022-11-18 18:33:22,038 INFO L899 garLoopResultBuilder]: For program point L13-7(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,039 INFO L899 garLoopResultBuilder]: For program point L13-8(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,039 INFO L899 garLoopResultBuilder]: For program point L13-9(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,039 INFO L899 garLoopResultBuilder]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2022-11-18 18:33:22,039 INFO L899 garLoopResultBuilder]: For program point fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,039 INFO L899 garLoopResultBuilder]: For program point fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,039 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 14) no Hoare annotation was computed. [2022-11-18 18:33:22,039 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 14) no Hoare annotation was computed. [2022-11-18 18:33:22,039 INFO L899 garLoopResultBuilder]: For program point fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 18:33:22,039 INFO L902 garLoopResultBuilder]: At program point fiboENTRY(lines 7 15) the Hoare annotation is: true [2022-11-18 18:33:22,042 INFO L444 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1, 1] [2022-11-18 18:33:22,048 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:33:22,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:33:22 BoogieIcfgContainer [2022-11-18 18:33:22,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:33:22,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:33:22,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:33:22,063 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:33:22,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:32:52" (3/4) ... [2022-11-18 18:33:22,067 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 18:33:22,073 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2022-11-18 18:33:22,078 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-18 18:33:22,079 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 18:33:22,079 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 18:33:22,079 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 18:33:22,114 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:33:22,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:33:22,115 INFO L158 Benchmark]: Toolchain (without parser) took 30170.57ms. Allocated memory was 132.1MB in the beginning and 285.2MB in the end (delta: 153.1MB). Free memory was 105.5MB in the beginning and 168.3MB in the end (delta: -62.8MB). Peak memory consumption was 90.2MB. Max. memory is 16.1GB. [2022-11-18 18:33:22,115 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 132.1MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:33:22,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.33ms. Allocated memory is still 132.1MB. Free memory was 105.3MB in the beginning and 105.9MB in the end (delta: -549.9kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:33:22,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.99ms. Allocated memory is still 132.1MB. Free memory was 105.9MB in the beginning and 104.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:33:22,116 INFO L158 Benchmark]: Boogie Preprocessor took 36.64ms. Allocated memory is still 132.1MB. Free memory was 104.7MB in the beginning and 103.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:33:22,116 INFO L158 Benchmark]: RCFGBuilder took 369.78ms. Allocated memory is still 132.1MB. Free memory was 103.6MB in the beginning and 94.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:33:22,117 INFO L158 Benchmark]: TraceAbstraction took 29353.32ms. Allocated memory was 132.1MB in the beginning and 285.2MB in the end (delta: 153.1MB). Free memory was 93.3MB in the beginning and 171.4MB in the end (delta: -78.1MB). Peak memory consumption was 77.4MB. Max. memory is 16.1GB. [2022-11-18 18:33:22,117 INFO L158 Benchmark]: Witness Printer took 51.38ms. Allocated memory is still 285.2MB. Free memory was 170.4MB in the beginning and 168.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:33:22,124 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 132.1MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.33ms. Allocated memory is still 132.1MB. Free memory was 105.3MB in the beginning and 105.9MB in the end (delta: -549.9kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.99ms. Allocated memory is still 132.1MB. Free memory was 105.9MB in the beginning and 104.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.64ms. Allocated memory is still 132.1MB. Free memory was 104.7MB in the beginning and 103.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 369.78ms. Allocated memory is still 132.1MB. Free memory was 103.6MB in the beginning and 94.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 29353.32ms. Allocated memory was 132.1MB in the beginning and 285.2MB in the end (delta: 153.1MB). Free memory was 93.3MB in the beginning and 171.4MB in the end (delta: -78.1MB). Peak memory consumption was 77.4MB. Max. memory is 16.1GB. * Witness Printer took 51.38ms. Allocated memory is still 285.2MB. Free memory was 170.4MB in the beginning and 168.3MB 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: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 29.3s, OverallIterations: 14, TraceHistogramMax: 41, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1216 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1176 mSDsluCounter, 2000 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1621 mSDsCounter, 410 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2880 IncrementalHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 410 mSolverCounterUnsat, 379 mSDtfsCounter, 2880 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2397 GetRequests, 2030 SyntacticMatches, 119 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3945 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=8, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 132 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 281 PreInvPairs, 299 NumberOfFragments, 135 HoareAnnotationTreeSize, 281 FomulaSimplifications, 725 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1100 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 21.1s InterpolantComputationTime, 2164 NumberOfCodeBlocks, 2128 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 3089 ConstructedInterpolants, 0 QuantifiedInterpolants, 7022 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1985 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 31 InterpolantComputations, 6 PerfectInterpolantSequences, 18430/22891 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 6 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: x <= 7 RESULT: Ultimate proved your program to be correct! [2022-11-18 18:33:22,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecf3bab7-495a-499b-ae8c-ed12e935edea/bin/uautomizer-TMbwUNV5ro/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