./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/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_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/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_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/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 acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 --- 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 20:10:01,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:10:01,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:10:02,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:10:02,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:10:02,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:10:02,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:10:02,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:10:02,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:10:02,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:10:02,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:10:02,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:10:02,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:10:02,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:10:02,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:10:02,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:10:02,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:10:02,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:10:02,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:10:02,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:10:02,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:10:02,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:10:02,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:10:02,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:10:02,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:10:02,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:10:02,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:10:02,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:10:02,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:10:02,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:10:02,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:10:02,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:10:02,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:10:02,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:10:02,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:10:02,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:10:02,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:10:02,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:10:02,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:10:02,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:10:02,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:10:02,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:10:02,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:10:02,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:10:02,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:10:02,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:10:02,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:10:02,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:10:02,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:10:02,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:10:02,115 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:10:02,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:10:02,115 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:10:02,115 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:10:02,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:10:02,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:10:02,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:10:02,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:10:02,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:10:02,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:10:02,116 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:10:02,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:10:02,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:10:02,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:10:02,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:10:02,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:10:02,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:10:02,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:10:02,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:10:02,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:10:02,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:10:02,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:10:02,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:10:02,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:10:02,119 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:10:02,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:10:02,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:10:02,119 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_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 [2022-11-18 20:10:02,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:10:02,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:10:02,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:10:02,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:10:02,428 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:10:02,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/recursive-simple/fibo_10-1.c [2022-11-18 20:10:02,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/data/95fac5eac/fc4eed0146284a08a95b9053e7d3569e/FLAGd1eab5854 [2022-11-18 20:10:03,046 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:10:03,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/sv-benchmarks/c/recursive-simple/fibo_10-1.c [2022-11-18 20:10:03,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/data/95fac5eac/fc4eed0146284a08a95b9053e7d3569e/FLAGd1eab5854 [2022-11-18 20:10:03,515 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/data/95fac5eac/fc4eed0146284a08a95b9053e7d3569e [2022-11-18 20:10:03,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:10:03,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:10:03,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:10:03,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:10:03,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:10:03,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577df844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03, skipping insertion in model container [2022-11-18 20:10:03,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:10:03,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:10:03,724 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_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/sv-benchmarks/c/recursive-simple/fibo_10-1.c[743,756] [2022-11-18 20:10:03,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:10:03,733 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:10:03,747 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_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/sv-benchmarks/c/recursive-simple/fibo_10-1.c[743,756] [2022-11-18 20:10:03,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:10:03,760 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:10:03,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03 WrapperNode [2022-11-18 20:10:03,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:10:03,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:10:03,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:10:03,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:10:03,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,790 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-18 20:10:03,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:10:03,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:10:03,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:10:03,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:10:03,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,807 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:10:03,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:10:03,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:10:03,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:10:03,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (1/1) ... [2022-11-18 20:10:03,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:10:03,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:03,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:10:03,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:10:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:10:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:10:03,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:10:03,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:10:03,888 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-18 20:10:03,888 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-18 20:10:03,959 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:10:03,961 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:10:04,093 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:10:04,099 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:10:04,099 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:10:04,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:10:04 BoogieIcfgContainer [2022-11-18 20:10:04,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:10:04,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:10:04,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:10:04,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:10:04,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:10:03" (1/3) ... [2022-11-18 20:10:04,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497a0a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:10:04, skipping insertion in model container [2022-11-18 20:10:04,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:10:03" (2/3) ... [2022-11-18 20:10:04,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497a0a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:10:04, skipping insertion in model container [2022-11-18 20:10:04,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:10:04" (3/3) ... [2022-11-18 20:10:04,110 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_10-1.c [2022-11-18 20:10:04,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:10:04,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 20:10:04,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:10:04,227 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;@216359a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:10:04,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 20:10:04,237 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 20:10:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:10:04,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:04,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:04,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:04,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1840307469, now seen corresponding path program 1 times [2022-11-18 20:10:04,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:04,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756448438] [2022-11-18 20:10:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:04,454 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 20:10:04,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:04,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756448438] [2022-11-18 20:10:04,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756448438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:04,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:04,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:10:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027836485] [2022-11-18 20:10:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:04,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:10:04,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:04,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:10:04,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:10:04,524 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 20:10:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:04,691 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-18 20:10:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:10:04,694 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 20:10:04,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:04,701 INFO L225 Difference]: With dead ends: 35 [2022-11-18 20:10:04,706 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 20:10:04,708 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 20:10:04,714 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 20:10:04,717 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 20:10:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 20:10:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-18 20:10:04,765 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 20:10:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-18 20:10:04,771 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2022-11-18 20:10:04,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:04,771 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-18 20:10:04,772 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 20:10:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-18 20:10:04,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:10:04,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:04,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:04,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:10:04,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:04,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1214956750, now seen corresponding path program 1 times [2022-11-18 20:10:04,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:04,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069335993] [2022-11-18 20:10:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:04,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:04,861 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 20:10:04,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:04,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069335993] [2022-11-18 20:10:04,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069335993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:04,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:04,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:10:04,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005486885] [2022-11-18 20:10:04,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:04,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:10:04,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:04,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:10:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:10:04,865 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 20:10:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:04,916 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-18 20:10:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:10:04,917 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 20:10:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:04,919 INFO L225 Difference]: With dead ends: 24 [2022-11-18 20:10:04,919 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 20:10:04,920 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 20:10:04,922 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:04,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:10:04,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 20:10:04,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-11-18 20:10:04,931 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 20:10:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-18 20:10:04,935 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2022-11-18 20:10:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:04,936 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-18 20:10:04,937 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 20:10:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-18 20:10:04,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:10:04,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:04,942 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 20:10:04,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:10:04,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:04,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:04,946 INFO L85 PathProgramCache]: Analyzing trace with hash 199265907, now seen corresponding path program 1 times [2022-11-18 20:10:04,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:04,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964293173] [2022-11-18 20:10:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:04,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:05,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:10:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:05,218 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 20:10:05,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:05,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964293173] [2022-11-18 20:10:05,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964293173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:05,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:05,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:10:05,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887150612] [2022-11-18 20:10:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:05,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:10:05,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:05,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:10:05,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:10:05,221 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 20:10:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:05,263 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-11-18 20:10:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:10:05,264 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 20:10:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:05,265 INFO L225 Difference]: With dead ends: 36 [2022-11-18 20:10:05,265 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 20:10:05,265 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 20:10:05,267 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 20:10:05,267 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 20:10:05,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 20:10:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-11-18 20:10:05,274 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 20:10:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-18 20:10:05,276 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2022-11-18 20:10:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:05,276 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-18 20:10:05,276 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 20:10:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-18 20:10:05,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 20:10:05,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:05,278 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 20:10:05,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:10:05,278 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:05,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1894113426, now seen corresponding path program 1 times [2022-11-18 20:10:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:05,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239887464] [2022-11-18 20:10:05,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:05,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:10:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:05,429 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 20:10:05,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:05,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239887464] [2022-11-18 20:10:05,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239887464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:05,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391291644] [2022-11-18 20:10:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:05,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:05,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:05,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:05,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:10:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:05,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:10:05,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:05,697 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 20:10:05,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:10:05,927 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 20:10:05,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391291644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:10:05,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:10:05,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-18 20:10:05,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840208338] [2022-11-18 20:10:05,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:05,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:10:05,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:05,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:10:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:10:05,930 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 20:10:06,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:06,596 INFO L93 Difference]: Finished difference Result 178 states and 248 transitions. [2022-11-18 20:10:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:10:06,597 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 20:10:06,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:06,599 INFO L225 Difference]: With dead ends: 178 [2022-11-18 20:10:06,600 INFO L226 Difference]: Without dead ends: 145 [2022-11-18 20:10:06,601 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 20:10:06,603 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 213 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:06,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 258 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:10:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-18 20:10:06,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 129. [2022-11-18 20:10:06,633 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 20:10:06,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2022-11-18 20:10:06,642 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 30 [2022-11-18 20:10:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:06,643 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2022-11-18 20:10:06,643 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 20:10:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2022-11-18 20:10:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:10:06,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:06,648 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 20:10:06,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:06,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:06,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:06,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1184531600, now seen corresponding path program 2 times [2022-11-18 20:10:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:06,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728201419] [2022-11-18 20:10:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:10:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:10:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:07,023 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 20:10:07,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728201419] [2022-11-18 20:10:07,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728201419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:07,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071150445] [2022-11-18 20:10:07,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:10:07,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:07,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:07,026 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:07,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:10:07,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:10:07,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:10:07,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:10:07,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:07,130 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 20:10:07,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:10:07,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071150445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:07,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:10:07,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:10:07,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778560744] [2022-11-18 20:10:07,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:07,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:10:07,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:07,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:10:07,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:10:07,133 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 20:10:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:07,176 INFO L93 Difference]: Finished difference Result 143 states and 190 transitions. [2022-11-18 20:10:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:10:07,177 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 20:10:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:07,179 INFO L225 Difference]: With dead ends: 143 [2022-11-18 20:10:07,180 INFO L226 Difference]: Without dead ends: 142 [2022-11-18 20:10:07,180 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 20:10:07,181 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 20:10:07,182 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 20:10:07,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-18 20:10:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 133. [2022-11-18 20:10:07,212 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 20:10:07,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 178 transitions. [2022-11-18 20:10:07,215 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 178 transitions. Word has length 42 [2022-11-18 20:10:07,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:07,215 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 178 transitions. [2022-11-18 20:10:07,215 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 20:10:07,215 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 178 transitions. [2022-11-18 20:10:07,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:10:07,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:07,217 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 20:10:07,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:07,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:07,422 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:07,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:07,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1934226135, now seen corresponding path program 1 times [2022-11-18 20:10:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:07,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174029835] [2022-11-18 20:10:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:10:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:10:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:07,635 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 20:10:07,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:07,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174029835] [2022-11-18 20:10:07,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174029835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:07,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090399768] [2022-11-18 20:10:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:07,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:07,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:07,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:07,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:10:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:07,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:10:07,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:07,902 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 20:10:07,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:10:08,193 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 20:10:08,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090399768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:10:08,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:10:08,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 27 [2022-11-18 20:10:08,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868315858] [2022-11-18 20:10:08,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:08,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:10:08,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:08,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:10:08,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:10:08,203 INFO L87 Difference]: Start difference. First operand 133 states and 178 transitions. Second operand has 27 states, 25 states have (on average 3.08) internal successors, (77), 19 states have internal predecessors, (77), 13 states have call successors, (15), 10 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:10:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:09,533 INFO L93 Difference]: Finished difference Result 450 states and 682 transitions. [2022-11-18 20:10:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:10:09,533 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.08) internal successors, (77), 19 states have internal predecessors, (77), 13 states have call successors, (15), 10 states have call predecessors, (15), 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 20:10:09,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:09,544 INFO L225 Difference]: With dead ends: 450 [2022-11-18 20:10:09,544 INFO L226 Difference]: Without dead ends: 332 [2022-11-18 20:10:09,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1568, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:10:09,565 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 265 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:09,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 685 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:10:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-18 20:10:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 295. [2022-11-18 20:10:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 232 states have (on average 1.0991379310344827) internal successors, (255), 232 states have internal predecessors, (255), 37 states have call successors, (37), 11 states have call predecessors, (37), 24 states have return successors, (109), 51 states have call predecessors, (109), 36 states have call successors, (109) [2022-11-18 20:10:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 401 transitions. [2022-11-18 20:10:09,606 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 401 transitions. Word has length 43 [2022-11-18 20:10:09,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:09,607 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 401 transitions. [2022-11-18 20:10:09,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.08) internal successors, (77), 19 states have internal predecessors, (77), 13 states have call successors, (15), 10 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:10:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 401 transitions. [2022-11-18 20:10:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 20:10:09,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:09,610 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:09,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:09,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:09,815 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:09,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -994547079, now seen corresponding path program 1 times [2022-11-18 20:10:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:09,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695835858] [2022-11-18 20:10:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:09,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:09,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:10:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:09,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:10:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2022-11-18 20:10:10,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:10,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695835858] [2022-11-18 20:10:10,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695835858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:10,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:10,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:10:10,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021750804] [2022-11-18 20:10:10,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:10,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:10:10,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:10,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:10:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:10:10,002 INFO L87 Difference]: Start difference. First operand 295 states and 401 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 20:10:10,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:10,060 INFO L93 Difference]: Finished difference Result 312 states and 424 transitions. [2022-11-18 20:10:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:10:10,061 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 79 [2022-11-18 20:10:10,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:10,065 INFO L225 Difference]: With dead ends: 312 [2022-11-18 20:10:10,066 INFO L226 Difference]: Without dead ends: 310 [2022-11-18 20:10:10,067 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 20:10:10,068 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:10,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:10:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-18 20:10:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 302. [2022-11-18 20:10:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 238 states have (on average 1.096638655462185) internal successors, (261), 237 states have internal predecessors, (261), 38 states have call successors, (38), 11 states have call predecessors, (38), 24 states have return successors, (115), 53 states have call predecessors, (115), 37 states have call successors, (115) [2022-11-18 20:10:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 414 transitions. [2022-11-18 20:10:10,139 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 414 transitions. Word has length 79 [2022-11-18 20:10:10,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:10,141 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 414 transitions. [2022-11-18 20:10:10,142 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 20:10:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 414 transitions. [2022-11-18 20:10:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-18 20:10:10,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:10,152 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 11, 11, 11, 11, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:10,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:10:10,152 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:10,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1067767521, now seen corresponding path program 1 times [2022-11-18 20:10:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:10,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261026973] [2022-11-18 20:10:10,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:10,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:10,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:10:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:10:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:10:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:10,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2022-11-18 20:10:10,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:10,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261026973] [2022-11-18 20:10:10,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261026973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:10,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373276621] [2022-11-18 20:10:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:10,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:10,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:10,317 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:10,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:10:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:10,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:10:10,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 434 proven. 27 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:10:10,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:10:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 279 proven. 175 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 20:10:11,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373276621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:10:11,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:10:11,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 23, 23] total 26 [2022-11-18 20:10:11,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009871176] [2022-11-18 20:10:11,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:11,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:10:11,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:11,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:10:11,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:10:11,177 INFO L87 Difference]: Start difference. First operand 302 states and 414 transitions. Second operand has 26 states, 25 states have (on average 3.56) internal successors, (89), 16 states have internal predecessors, (89), 13 states have call successors, (19), 12 states have call predecessors, (19), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-18 20:10:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:11,855 INFO L93 Difference]: Finished difference Result 585 states and 834 transitions. [2022-11-18 20:10:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:10:11,856 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.56) internal successors, (89), 16 states have internal predecessors, (89), 13 states have call successors, (19), 12 states have call predecessors, (19), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 107 [2022-11-18 20:10:11,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:11,858 INFO L225 Difference]: With dead ends: 585 [2022-11-18 20:10:11,859 INFO L226 Difference]: Without dead ends: 298 [2022-11-18 20:10:11,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 189 SyntacticMatches, 21 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=442, Invalid=1118, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:10:11,863 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 379 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:11,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 159 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:10:11,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-18 20:10:11,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 273. [2022-11-18 20:10:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 214 states have (on average 1.0981308411214954) internal successors, (235), 216 states have internal predecessors, (235), 34 states have call successors, (34), 12 states have call predecessors, (34), 23 states have return successors, (69), 44 states have call predecessors, (69), 33 states have call successors, (69) [2022-11-18 20:10:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 338 transitions. [2022-11-18 20:10:11,888 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 338 transitions. Word has length 107 [2022-11-18 20:10:11,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:11,888 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 338 transitions. [2022-11-18 20:10:11,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.56) internal successors, (89), 16 states have internal predecessors, (89), 13 states have call successors, (19), 12 states have call predecessors, (19), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-18 20:10:11,889 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 338 transitions. [2022-11-18 20:10:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 20:10:11,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:11,891 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:11,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:12,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:10:12,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:12,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1716726318, now seen corresponding path program 2 times [2022-11-18 20:10:12,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:12,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435247441] [2022-11-18 20:10:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:12,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:10:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:10:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:10:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-18 20:10:12,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:12,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435247441] [2022-11-18 20:10:12,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435247441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:12,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740471454] [2022-11-18 20:10:12,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:10:12,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:12,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:12,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:12,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:10:12,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:10:12,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:10:12,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:10:12,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 45 proven. 254 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:10:12,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:10:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 286 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:10:13,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740471454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:10:13,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:10:13,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 22, 23] total 27 [2022-11-18 20:10:13,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452317616] [2022-11-18 20:10:13,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:13,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:10:13,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:13,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:10:13,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:10:13,091 INFO L87 Difference]: Start difference. First operand 273 states and 338 transitions. Second operand has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 19 states have internal predecessors, (89), 15 states have call successors, (17), 10 states have call predecessors, (17), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:10:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:13,691 INFO L93 Difference]: Finished difference Result 523 states and 682 transitions. [2022-11-18 20:10:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:10:13,692 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 19 states have internal predecessors, (89), 15 states have call successors, (17), 10 states have call predecessors, (17), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) Word has length 85 [2022-11-18 20:10:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:13,694 INFO L225 Difference]: With dead ends: 523 [2022-11-18 20:10:13,694 INFO L226 Difference]: Without dead ends: 211 [2022-11-18 20:10:13,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 148 SyntacticMatches, 19 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=365, Invalid=1117, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:10:13,698 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 352 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:13,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 377 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:10:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-18 20:10:13,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 184. [2022-11-18 20:10:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 145 states have (on average 1.1655172413793105) internal successors, (169), 147 states have internal predecessors, (169), 23 states have call successors, (23), 12 states have call predecessors, (23), 14 states have return successors, (26), 24 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-18 20:10:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 218 transitions. [2022-11-18 20:10:13,717 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 218 transitions. Word has length 85 [2022-11-18 20:10:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:13,717 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 218 transitions. [2022-11-18 20:10:13,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 19 states have internal predecessors, (89), 15 states have call successors, (17), 10 states have call predecessors, (17), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:10:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 218 transitions. [2022-11-18 20:10:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-18 20:10:13,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:13,719 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:13,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:13,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:13,924 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:13,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:13,924 INFO L85 PathProgramCache]: Analyzing trace with hash -906589917, now seen corresponding path program 3 times [2022-11-18 20:10:13,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:13,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134142724] [2022-11-18 20:10:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:13,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:10:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:10:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-18 20:10:14,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:14,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134142724] [2022-11-18 20:10:14,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134142724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:14,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142371419] [2022-11-18 20:10:14,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:10:14,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:14,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:14,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:14,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:10:14,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:10:14,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:10:14,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:10:14,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-18 20:10:14,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:10:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-11-18 20:10:14,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142371419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:10:14,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:10:14,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2022-11-18 20:10:14,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143286116] [2022-11-18 20:10:14,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:14,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:10:14,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:14,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:10:14,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:10:14,482 INFO L87 Difference]: Start difference. First operand 184 states and 218 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 20:10:14,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:14,585 INFO L93 Difference]: Finished difference Result 188 states and 218 transitions. [2022-11-18 20:10:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:10:14,586 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 86 [2022-11-18 20:10:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:14,587 INFO L225 Difference]: With dead ends: 188 [2022-11-18 20:10:14,587 INFO L226 Difference]: Without dead ends: 187 [2022-11-18 20:10:14,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:10:14,588 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:14,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 104 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:10:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-18 20:10:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 184. [2022-11-18 20:10:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 145 states have (on average 1.1448275862068966) internal successors, (166), 147 states have internal predecessors, (166), 23 states have call successors, (23), 12 states have call predecessors, (23), 14 states have return successors, (26), 24 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-18 20:10:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 215 transitions. [2022-11-18 20:10:14,602 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 215 transitions. Word has length 86 [2022-11-18 20:10:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:14,602 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 215 transitions. [2022-11-18 20:10:14,602 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 20:10:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 215 transitions. [2022-11-18 20:10:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 20:10:14,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:14,604 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:14,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:14,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:10:14,814 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:14,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:14,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1960483716, now seen corresponding path program 1 times [2022-11-18 20:10:14,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:14,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165917189] [2022-11-18 20:10:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:14,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:10:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:10:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-11-18 20:10:14,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:14,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165917189] [2022-11-18 20:10:14,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165917189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:10:14,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:10:14,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:10:14,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026553582] [2022-11-18 20:10:14,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:10:14,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:10:14,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:10:14,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:10:14,952 INFO L87 Difference]: Start difference. First operand 184 states and 215 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 20:10:14,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:14,986 INFO L93 Difference]: Finished difference Result 185 states and 215 transitions. [2022-11-18 20:10:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:10:14,987 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 87 [2022-11-18 20:10:14,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:14,989 INFO L225 Difference]: With dead ends: 185 [2022-11-18 20:10:14,989 INFO L226 Difference]: Without dead ends: 184 [2022-11-18 20:10:14,989 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 20:10:14,990 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 20:10:14,990 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 20:10:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-18 20:10:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-11-18 20:10:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 145 states have (on average 1.1379310344827587) internal successors, (165), 147 states have internal predecessors, (165), 23 states have call successors, (23), 12 states have call predecessors, (23), 14 states have return successors, (26), 24 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-18 20:10:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 214 transitions. [2022-11-18 20:10:15,003 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 214 transitions. Word has length 87 [2022-11-18 20:10:15,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:15,004 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 214 transitions. [2022-11-18 20:10:15,004 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 20:10:15,004 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 214 transitions. [2022-11-18 20:10:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 20:10:15,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:15,006 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 10, 10, 10, 10, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2022-11-18 20:10:15,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:10:15,006 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:15,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:15,007 INFO L85 PathProgramCache]: Analyzing trace with hash 702327834, now seen corresponding path program 2 times [2022-11-18 20:10:15,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:15,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107115601] [2022-11-18 20:10:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:15,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:10:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:10:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:15,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:15,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 203 proven. 183 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:10:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:15,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107115601] [2022-11-18 20:10:15,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107115601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:15,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419312893] [2022-11-18 20:10:15,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:10:15,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:15,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:15,457 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:15,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:10:15,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:10:15,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:10:15,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:10:15,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-11-18 20:10:15,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:10:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-18 20:10:15,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419312893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:10:15,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:10:15,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 6, 5] total 31 [2022-11-18 20:10:15,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145576752] [2022-11-18 20:10:15,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:15,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:10:15,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:15,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:10:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:10:15,937 INFO L87 Difference]: Start difference. First operand 184 states and 214 transitions. Second operand has 31 states, 30 states have (on average 3.2666666666666666) internal successors, (98), 23 states have internal predecessors, (98), 13 states have call successors, (17), 9 states have call predecessors, (17), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-18 20:10:17,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:17,619 INFO L93 Difference]: Finished difference Result 318 states and 366 transitions. [2022-11-18 20:10:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-18 20:10:17,620 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.2666666666666666) internal successors, (98), 23 states have internal predecessors, (98), 13 states have call successors, (17), 9 states have call predecessors, (17), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) Word has length 106 [2022-11-18 20:10:17,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:17,621 INFO L225 Difference]: With dead ends: 318 [2022-11-18 20:10:17,622 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 20:10:17,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 218 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1575, Invalid=4745, Unknown=0, NotChecked=0, Total=6320 [2022-11-18 20:10:17,625 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 459 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:17,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 65 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:10:17,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 20:10:17,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 172. [2022-11-18 20:10:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 136 states have (on average 1.0588235294117647) internal successors, (144), 137 states have internal predecessors, (144), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:10:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 189 transitions. [2022-11-18 20:10:17,637 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 189 transitions. Word has length 106 [2022-11-18 20:10:17,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:17,638 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 189 transitions. [2022-11-18 20:10:17,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.2666666666666666) internal successors, (98), 23 states have internal predecessors, (98), 13 states have call successors, (17), 9 states have call predecessors, (17), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-18 20:10:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 189 transitions. [2022-11-18 20:10:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-18 20:10:17,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:17,640 INFO L195 NwaCegarLoop]: trace histogram [20, 17, 14, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1, 1] [2022-11-18 20:10:17,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:17,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:10:17,875 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:17,876 INFO L85 PathProgramCache]: Analyzing trace with hash -779849832, now seen corresponding path program 4 times [2022-11-18 20:10:17,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:17,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699806850] [2022-11-18 20:10:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:17,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:10:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 20:10:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2022-11-18 20:10:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:18,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699806850] [2022-11-18 20:10:18,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699806850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:18,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458194969] [2022-11-18 20:10:18,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:10:18,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:18,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:18,729 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:18,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:10:18,821 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:10:18,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:10:18,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:10:18,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2022-11-18 20:10:19,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:10:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 144 proven. 122 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-11-18 20:10:20,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458194969] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:10:20,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:10:20,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2022-11-18 20:10:20,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846791353] [2022-11-18 20:10:20,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:20,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:10:20,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:10:20,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:10:20,449 INFO L87 Difference]: Start difference. First operand 172 states and 189 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 20:10:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:20,556 INFO L93 Difference]: Finished difference Result 173 states and 189 transitions. [2022-11-18 20:10:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:10:20,557 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 172 [2022-11-18 20:10:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:20,559 INFO L225 Difference]: With dead ends: 173 [2022-11-18 20:10:20,559 INFO L226 Difference]: Without dead ends: 172 [2022-11-18 20:10:20,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 358 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 20:10:20,561 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 172 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 20:10:20,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 172 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:10:20,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-18 20:10:20,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-11-18 20:10:20,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 136 states have (on average 1.036764705882353) internal successors, (141), 137 states have internal predecessors, (141), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:10:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 186 transitions. [2022-11-18 20:10:20,573 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 186 transitions. Word has length 172 [2022-11-18 20:10:20,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:20,574 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 186 transitions. [2022-11-18 20:10:20,574 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 20:10:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 186 transitions. [2022-11-18 20:10:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-18 20:10:20,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:20,584 INFO L195 NwaCegarLoop]: trace histogram [44, 40, 36, 23, 23, 23, 23, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1, 1] [2022-11-18 20:10:20,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:20,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:10:20,790 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:20,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash 396660910, now seen corresponding path program 5 times [2022-11-18 20:10:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:20,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993692651] [2022-11-18 20:10:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:20,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:10:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:10:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:23,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:10:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-11-18 20:10:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:10:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6152 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2022-11-18 20:10:24,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:24,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993692651] [2022-11-18 20:10:24,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993692651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:24,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481999083] [2022-11-18 20:10:24,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:10:24,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:24,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:24,709 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:24,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:10:24,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-11-18 20:10:24,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:10:24,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-18 20:10:24,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6152 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4239 trivial. 0 not checked. [2022-11-18 20:10:25,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:10:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6152 backedges. 1149 proven. 996 refuted. 0 times theorem prover too weak. 4007 trivial. 0 not checked. [2022-11-18 20:10:33,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481999083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:10:33,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:10:33,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2022-11-18 20:10:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833981418] [2022-11-18 20:10:33,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:33,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:10:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:10:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:10:33,591 INFO L87 Difference]: Start difference. First operand 172 states and 186 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 20:10:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:33,760 INFO L93 Difference]: Finished difference Result 173 states and 186 transitions. [2022-11-18 20:10:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:10:33,761 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 415 [2022-11-18 20:10:33,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:33,763 INFO L225 Difference]: With dead ends: 173 [2022-11-18 20:10:33,763 INFO L226 Difference]: Without dead ends: 172 [2022-11-18 20:10:33,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 888 SyntacticMatches, 62 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:10:33,765 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 53 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:33,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 252 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:10:33,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-18 20:10:33,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-11-18 20:10:33,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:10:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 183 transitions. [2022-11-18 20:10:33,777 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 183 transitions. Word has length 415 [2022-11-18 20:10:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:33,778 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 183 transitions. [2022-11-18 20:10:33,778 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 20:10:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 183 transitions. [2022-11-18 20:10:33,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2022-11-18 20:10:33,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:33,820 INFO L195 NwaCegarLoop]: trace histogram [110, 108, 89, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 53, 53, 34, 21, 1, 1, 1, 1] [2022-11-18 20:10:33,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:34,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:10:34,026 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:10:34,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:34,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1723956895, now seen corresponding path program 6 times [2022-11-18 20:10:34,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:34,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548808368] [2022-11-18 20:10:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:44,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:46,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:47,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:10:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:10:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-18 20:10:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:10:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:48,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-11-18 20:10:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:10:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:10:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2022-11-18 20:10:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:10:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:10:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:50,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-18 20:10:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:10:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:10:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:10:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:10:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 41881 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2022-11-18 20:10:51,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:51,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548808368] [2022-11-18 20:10:51,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548808368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:51,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677782686] [2022-11-18 20:10:51,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:10:51,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:51,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:51,421 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:51,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:10:52,160 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 76 check-sat command(s) [2022-11-18 20:10:52,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:10:52,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 2001 conjuncts, 217 conjunts are in the unsatisfiable core [2022-11-18 20:10:52,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 41881 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2022-11-18 20:10:53,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 41881 backedges. 7863 proven. 7339 refuted. 0 times theorem prover too weak. 26679 trivial. 0 not checked. [2022-11-18 20:11:36,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677782686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:36,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:11:36,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 41] total 54 [2022-11-18 20:11:36,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85843138] [2022-11-18 20:11:36,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:36,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-18 20:11:36,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-18 20:11:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2328, Unknown=0, NotChecked=0, Total=2970 [2022-11-18 20:11:36,970 INFO L87 Difference]: Start difference. First operand 172 states and 183 transitions. Second operand has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) [2022-11-18 20:11:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:37,124 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2022-11-18 20:11:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:11:37,124 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) Word has length 1070 [2022-11-18 20:11:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:37,128 INFO L225 Difference]: With dead ends: 172 [2022-11-18 20:11:37,128 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 20:11:37,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2572 GetRequests, 2326 SyntacticMatches, 192 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7409 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=660, Invalid=2420, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:11:37,132 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 60 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:37,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 215 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:11:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 20:11:37,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 20:11:37,134 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 20:11:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 20:11:37,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1070 [2022-11-18 20:11:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:37,134 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 20:11:37,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) [2022-11-18 20:11:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 20:11:37,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 20:11:37,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-18 20:11:37,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-18 20:11:37,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-18 20:11:37,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-18 20:11:37,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-18 20:11:37,141 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-18 20:11:37,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:37,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:37,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 20:11:38,181 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 20:11:38,182 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 20:11:38,182 INFO L895 garLoopResultBuilder]: At program point L31(lines 25 32) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 10) [2022-11-18 20:11:38,182 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 20:11:38,182 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-11-18 20:11:38,182 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 20:11:38,182 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2022-11-18 20:11:38,182 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 10 |ULTIMATE.start_main_~x~0#1|)) [2022-11-18 20:11:38,183 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-11-18 20:11:38,183 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2022-11-18 20:11:38,183 INFO L899 garLoopResultBuilder]: For program point fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,183 INFO L899 garLoopResultBuilder]: For program point fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,183 INFO L899 garLoopResultBuilder]: For program point fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,183 INFO L899 garLoopResultBuilder]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2022-11-18 20:11:38,183 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,183 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,184 INFO L895 garLoopResultBuilder]: At program point L13-2(line 13) the Hoare annotation is: (and (or (and (<= fibo_~n 10) (<= 10 fibo_~n)) (not (<= |fibo_#in~n| 10)) (not (<= 10 |fibo_#in~n|))) (or (= fibo_~n |fibo_#in~n|) (not (<= |fibo_#in~n| 9))) (or (< 1 fibo_~n) (not (<= |fibo_#in~n| 2)))) [2022-11-18 20:11:38,184 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,184 INFO L899 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,184 INFO L899 garLoopResultBuilder]: For program point L13-5(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,184 INFO L895 garLoopResultBuilder]: At program point L13-6(line 13) the Hoare annotation is: (let ((.cse0 (<= 1 |fibo_#t~ret4|))) (and (or (not (<= |fibo_#in~n| 4)) (<= |fibo_#t~ret4| 2)) (or (not (<= |fibo_#in~n| 8)) (<= |fibo_#t~ret4| 13)) (or (not (<= |fibo_#in~n| 3)) (= |fibo_#t~ret4| 1)) (or (and (= fibo_~n |fibo_#in~n|) .cse0 (<= |fibo_#t~ret4| 21)) (not (<= |fibo_#in~n| 9))) (or (not (<= |fibo_#in~n| 5)) (<= |fibo_#t~ret4| 3)) (or (and (<= fibo_~n 10) (<= 10 fibo_~n) .cse0 (< |fibo_#t~ret4| 2147483615)) (not (<= |fibo_#in~n| 10)) (not (<= 10 |fibo_#in~n|))) (or (<= |fibo_#t~ret4| 5) (not (<= |fibo_#in~n| 6))) (or (<= |fibo_#t~ret4| 8) (not (<= |fibo_#in~n| 7))) (or (< 1 fibo_~n) (not (<= |fibo_#in~n| 2))))) [2022-11-18 20:11:38,184 INFO L899 garLoopResultBuilder]: For program point L13-7(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,184 INFO L899 garLoopResultBuilder]: For program point L13-8(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,184 INFO L899 garLoopResultBuilder]: For program point L13-9(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,184 INFO L899 garLoopResultBuilder]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2022-11-18 20:11:38,185 INFO L899 garLoopResultBuilder]: For program point fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,185 INFO L899 garLoopResultBuilder]: For program point fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,185 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 14) no Hoare annotation was computed. [2022-11-18 20:11:38,185 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 14) no Hoare annotation was computed. [2022-11-18 20:11:38,185 INFO L899 garLoopResultBuilder]: For program point fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-11-18 20:11:38,185 INFO L902 garLoopResultBuilder]: At program point fiboENTRY(lines 7 15) the Hoare annotation is: true [2022-11-18 20:11:38,191 INFO L444 BasicCegarLoop]: Path program histogram: [6, 2, 2, 1, 1, 1, 1, 1] [2022-11-18 20:11:38,194 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:11:38,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:11:38 BoogieIcfgContainer [2022-11-18 20:11:38,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:11:38,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:11:38,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:11:38,211 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:11:38,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:10:04" (3/4) ... [2022-11-18 20:11:38,215 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:11:38,221 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2022-11-18 20:11:38,228 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-18 20:11:38,229 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 20:11:38,229 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:11:38,229 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:11:38,278 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:11:38,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:11:38,278 INFO L158 Benchmark]: Toolchain (without parser) took 94758.03ms. Allocated memory was 144.7MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 116.1MB in the beginning and 654.3MB in the end (delta: -538.2MB). Peak memory consumption was 667.7MB. Max. memory is 16.1GB. [2022-11-18 20:11:38,279 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 92.3MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:11:38,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.96ms. Allocated memory is still 144.7MB. Free memory was 116.1MB in the beginning and 121.5MB in the end (delta: -5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:11:38,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.36ms. Allocated memory is still 144.7MB. Free memory was 121.5MB in the beginning and 120.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:11:38,279 INFO L158 Benchmark]: Boogie Preprocessor took 17.27ms. Allocated memory is still 144.7MB. Free memory was 120.3MB in the beginning and 119.4MB in the end (delta: 992.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:11:38,280 INFO L158 Benchmark]: RCFGBuilder took 291.79ms. Allocated memory is still 144.7MB. Free memory was 119.4MB in the beginning and 109.4MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:11:38,280 INFO L158 Benchmark]: TraceAbstraction took 94107.36ms. Allocated memory was 144.7MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 108.8MB in the beginning and 657.5MB in the end (delta: -548.7MB). Peak memory consumption was 660.4MB. Max. memory is 16.1GB. [2022-11-18 20:11:38,280 INFO L158 Benchmark]: Witness Printer took 66.71ms. Allocated memory is still 1.4GB. Free memory was 657.5MB in the beginning and 654.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:11:38,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 92.3MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.96ms. Allocated memory is still 144.7MB. Free memory was 116.1MB in the beginning and 121.5MB in the end (delta: -5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.36ms. Allocated memory is still 144.7MB. Free memory was 121.5MB in the beginning and 120.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.27ms. Allocated memory is still 144.7MB. Free memory was 120.3MB in the beginning and 119.4MB in the end (delta: 992.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 291.79ms. Allocated memory is still 144.7MB. Free memory was 119.4MB in the beginning and 109.4MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 94107.36ms. Allocated memory was 144.7MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 108.8MB in the beginning and 657.5MB in the end (delta: -548.7MB). Peak memory consumption was 660.4MB. Max. memory is 16.1GB. * Witness Printer took 66.71ms. Allocated memory is still 1.4GB. Free memory was 657.5MB in the beginning and 654.3MB in the end (delta: 3.1MB). 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: 94.0s, OverallIterations: 15, TraceHistogramMax: 110, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1949 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1903 mSDsluCounter, 2596 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2166 mSDsCounter, 739 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4550 IncrementalHoareTripleChecker+Invalid, 5289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 739 mSolverCounterUnsat, 430 mSDtfsCounter, 4550 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5193 GetRequests, 4499 SyntacticMatches, 317 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13111 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302occurred in iteration=7, InterpolantAutomatonStates: 269, 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, 15 MinimizatonAttempts, 137 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 395 PreInvPairs, 451 NumberOfFragments, 138 HoareAnnotationTreeSize, 395 FomulaSimplifications, 2502 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1217 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 82.1s InterpolantComputationTime, 4522 NumberOfCodeBlocks, 4468 NumberOfCodeBlocksAsserted, 137 NumberOfCheckSat, 6602 ConstructedInterpolants, 0 QuantifiedInterpolants, 15423 SizeOfPredicates, 29 NumberOfNonLiveVariables, 4099 ConjunctsInSsa, 412 ConjunctsInUnsatCore, 34 InterpolantComputations, 6 PerfectInterpolantSequences, 125212/152887 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 <= 10 RESULT: Ultimate proved your program to be correct! [2022-11-18 20:11:38,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4dbd38-c373-4fa8-8c54-d86777c5f9ee/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