./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8 --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 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:01:15,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:01:15,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:01:15,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:01:15,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:01:15,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:01:15,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:01:15,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:01:15,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:01:15,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:01:15,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:01:15,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:01:15,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:01:15,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:01:15,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:01:15,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:01:15,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:01:15,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:01:15,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:01:15,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:01:15,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:01:15,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:01:15,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:01:15,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:01:15,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:01:15,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:01:15,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:01:15,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:01:15,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:01:15,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:01:15,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:01:15,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:01:15,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:01:15,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:01:15,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:01:15,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:01:15,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:01:15,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:01:15,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:01:15,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:01:15,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:01:15,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 20:01:15,963 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:01:15,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:01:15,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:01:15,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:01:15,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:01:15,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:01:15,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:01:15,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:01:15,966 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:01:15,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:01:15,966 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:01:15,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:01:15,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:01:15,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:01:15,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:01:15,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:01:15,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:01:15,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:01:15,968 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:01:15,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:01:15,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:01:15,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:01:15,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:01:15,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:01:15,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:01:15,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:01:15,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:01:15,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:01:15,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:01:15,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:01:15,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:01:15,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:01:15,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:01:15,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:01:15,971 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:01:15,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:01:15,971 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:01:15,971 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2022-12-13 20:01:16,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:01:16,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:01:16,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:01:16,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:01:16,194 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:01:16,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2022-12-13 20:01:18,923 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:01:19,051 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:01:19,052 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2022-12-13 20:01:19,056 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/data/52d5443dd/214de63c6246405f88ec2583d5dae262/FLAGdf23f7434 [2022-12-13 20:01:19,067 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/data/52d5443dd/214de63c6246405f88ec2583d5dae262 [2022-12-13 20:01:19,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:01:19,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:01:19,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:01:19,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:01:19,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:01:19,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3125be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19, skipping insertion in model container [2022-12-13 20:01:19,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:01:19,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:01:19,199 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2022-12-13 20:01:19,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:01:19,208 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:01:19,229 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2022-12-13 20:01:19,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:01:19,239 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:01:19,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19 WrapperNode [2022-12-13 20:01:19,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:01:19,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:01:19,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:01:19,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:01:19,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,266 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-12-13 20:01:19,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:01:19,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:01:19,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:01:19,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:01:19,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,280 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:01:19,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:01:19,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:01:19,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:01:19,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (1/1) ... [2022-12-13 20:01:19,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:01:19,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:19,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:01:19,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:01:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:01:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:01:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-12-13 20:01:19,346 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-12-13 20:01:19,346 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-12-13 20:01:19,347 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-12-13 20:01:19,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:01:19,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:01:19,406 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:01:19,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:01:19,517 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:01:19,521 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:01:19,521 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:01:19,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:01:19 BoogieIcfgContainer [2022-12-13 20:01:19,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:01:19,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:01:19,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:01:19,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:01:19,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:01:19" (1/3) ... [2022-12-13 20:01:19,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758f84ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:01:19, skipping insertion in model container [2022-12-13 20:01:19,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:01:19" (2/3) ... [2022-12-13 20:01:19,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758f84ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:01:19, skipping insertion in model container [2022-12-13 20:01:19,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:01:19" (3/3) ... [2022-12-13 20:01:19,532 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2022-12-13 20:01:19,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:01:19,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 20:01:19,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:01:19,586 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;@3c0f48fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:01:19,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 20:01:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.53125) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 20:01:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 20:01:19,594 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:19,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:19,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1865119399, now seen corresponding path program 1 times [2022-12-13 20:01:19,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:19,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963550402] [2022-12-13 20:01:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:19,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:19,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:19,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963550402] [2022-12-13 20:01:19,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963550402] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:19,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:19,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:01:19,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632902067] [2022-12-13 20:01:19,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:19,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:19,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:19,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:19,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:19,774 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.53125) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-13 20:01:19,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:19,819 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2022-12-13 20:01:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:19,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-12-13 20:01:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:19,827 INFO L225 Difference]: With dead ends: 58 [2022-12-13 20:01:19,827 INFO L226 Difference]: Without dead ends: 45 [2022-12-13 20:01:19,829 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 [2022-12-13 20:01:19,831 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 90 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 [2022-12-13 20:01:19,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 90 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-13 20:01:19,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2022-12-13 20:01:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 20:01:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-12-13 20:01:19,859 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2022-12-13 20:01:19,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:19,860 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-12-13 20:01:19,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-12-13 20:01:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-12-13 20:01:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 20:01:19,860 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:19,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:19,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:01:19,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:19,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1984126606, now seen corresponding path program 1 times [2022-12-13 20:01:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:19,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830795461] [2022-12-13 20:01:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:19,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:19,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:19,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830795461] [2022-12-13 20:01:19,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830795461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:19,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:19,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:01:19,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780189281] [2022-12-13 20:01:19,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:19,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:01:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:01:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:19,926 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-12-13 20:01:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:19,990 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2022-12-13 20:01:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:01:19,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2022-12-13 20:01:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:19,992 INFO L225 Difference]: With dead ends: 64 [2022-12-13 20:01:19,992 INFO L226 Difference]: Without dead ends: 60 [2022-12-13 20:01:19,992 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 [2022-12-13 20:01:19,994 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 29 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:19,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 158 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:19,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-13 20:01:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2022-12-13 20:01:20,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:01:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-12-13 20:01:20,004 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2022-12-13 20:01:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:20,004 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-12-13 20:01:20,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-12-13 20:01:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-12-13 20:01:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 20:01:20,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:20,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:20,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:01:20,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:20,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1532318177, now seen corresponding path program 1 times [2022-12-13 20:01:20,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:20,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321494275] [2022-12-13 20:01:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:20,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:20,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:20,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321494275] [2022-12-13 20:01:20,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321494275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:20,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:20,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:01:20,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743384049] [2022-12-13 20:01:20,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:20,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:01:20,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:20,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:01:20,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:01:20,044 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:20,073 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2022-12-13 20:01:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:01:20,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 20:01:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:20,075 INFO L225 Difference]: With dead ends: 58 [2022-12-13 20:01:20,075 INFO L226 Difference]: Without dead ends: 56 [2022-12-13 20:01:20,075 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 [2022-12-13 20:01:20,077 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 70 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 [2022-12-13 20:01:20,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 70 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:20,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-13 20:01:20,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2022-12-13 20:01:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:01:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-12-13 20:01:20,091 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2022-12-13 20:01:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:20,092 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-12-13 20:01:20,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-12-13 20:01:20,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 20:01:20,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:20,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:20,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:01:20,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash 257223290, now seen corresponding path program 1 times [2022-12-13 20:01:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:20,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887094353] [2022-12-13 20:01:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:20,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:20,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887094353] [2022-12-13 20:01:20,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887094353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:20,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:20,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 20:01:20,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798747023] [2022-12-13 20:01:20,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:20,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:01:20,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:20,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:01:20,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:01:20,179 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:20,264 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-12-13 20:01:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:01:20,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-13 20:01:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:20,265 INFO L225 Difference]: With dead ends: 54 [2022-12-13 20:01:20,265 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 20:01:20,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:01:20,266 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:20,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 72 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:01:20,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 20:01:20,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-13 20:01:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 20:01:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-12-13 20:01:20,272 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2022-12-13 20:01:20,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:20,273 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-12-13 20:01:20,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:01:20,273 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-12-13 20:01:20,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 20:01:20,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:20,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:20,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:01:20,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:20,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash 802214107, now seen corresponding path program 1 times [2022-12-13 20:01:20,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:20,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491722962] [2022-12-13 20:01:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:20,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:20,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:01:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:20,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 20:01:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:01:20,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:20,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491722962] [2022-12-13 20:01:20,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491722962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:20,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:20,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:01:20,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472016933] [2022-12-13 20:01:20,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:20,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:01:20,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:20,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:01:20,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:20,377 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-12-13 20:01:20,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:20,407 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-12-13 20:01:20,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:01:20,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 23 [2022-12-13 20:01:20,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:20,409 INFO L225 Difference]: With dead ends: 76 [2022-12-13 20:01:20,409 INFO L226 Difference]: Without dead ends: 71 [2022-12-13 20:01:20,409 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 [2022-12-13 20:01:20,410 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 147 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 [2022-12-13 20:01:20,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 147 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:20,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-13 20:01:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2022-12-13 20:01:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2022-12-13 20:01:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2022-12-13 20:01:20,417 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2022-12-13 20:01:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:20,418 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2022-12-13 20:01:20,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-12-13 20:01:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2022-12-13 20:01:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 20:01:20,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:20,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:20,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:01:20,419 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:20,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash -890218714, now seen corresponding path program 1 times [2022-12-13 20:01:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:20,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576379385] [2022-12-13 20:01:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:20,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:20,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:01:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 20:01:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:01:20,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:20,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576379385] [2022-12-13 20:01:20,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576379385] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:20,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952767845] [2022-12-13 20:01:20,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:20,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:20,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:20,508 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:20,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:01:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:20,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:01:20,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:20,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:20,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952767845] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:20,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:01:20,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-12-13 20:01:20,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546971684] [2022-12-13 20:01:20,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:20,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:01:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:20,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:01:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:01:20,638 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:20,742 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2022-12-13 20:01:20,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:01:20,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-12-13 20:01:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:20,744 INFO L225 Difference]: With dead ends: 111 [2022-12-13 20:01:20,744 INFO L226 Difference]: Without dead ends: 61 [2022-12-13 20:01:20,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:01:20,746 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:20,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 121 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:01:20,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-13 20:01:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-12-13 20:01:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-12-13 20:01:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-12-13 20:01:20,755 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2022-12-13 20:01:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:20,755 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-12-13 20:01:20,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-12-13 20:01:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 20:01:20,757 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:20,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:20,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:01:20,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 20:01:20,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:20,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash 411319597, now seen corresponding path program 1 times [2022-12-13 20:01:20,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:20,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250512816] [2022-12-13 20:01:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:20,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:21,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:01:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 20:01:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:01:21,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:21,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250512816] [2022-12-13 20:01:21,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250512816] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:21,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:21,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:01:21,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980098640] [2022-12-13 20:01:21,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:21,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:01:21,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:21,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:01:21,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:21,156 INFO L87 Difference]: Start difference. First operand 59 states and 71 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:21,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:21,194 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-12-13 20:01:21,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:01:21,194 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-12-13 20:01:21,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:21,195 INFO L225 Difference]: With dead ends: 85 [2022-12-13 20:01:21,195 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 20:01:21,195 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 [2022-12-13 20:01:21,196 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 5 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:21,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 152 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:21,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 20:01:21,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2022-12-13 20:01:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2022-12-13 20:01:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-12-13 20:01:21,203 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2022-12-13 20:01:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:21,203 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-12-13 20:01:21,203 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-12-13 20:01:21,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 20:01:21,205 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:21,205 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:21,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:01:21,205 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:21,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:21,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2120732165, now seen corresponding path program 1 times [2022-12-13 20:01:21,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:21,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760882341] [2022-12-13 20:01:21,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:21,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:21,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:01:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 20:01:21,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:21,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760882341] [2022-12-13 20:01:21,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760882341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:21,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:21,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:01:21,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650288373] [2022-12-13 20:01:21,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:21,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:01:21,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:01:21,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:21,269 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:21,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:21,296 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-12-13 20:01:21,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:01:21,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-12-13 20:01:21,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:21,298 INFO L225 Difference]: With dead ends: 85 [2022-12-13 20:01:21,298 INFO L226 Difference]: Without dead ends: 83 [2022-12-13 20:01:21,298 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 [2022-12-13 20:01:21,299 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:21,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 114 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:21,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-12-13 20:01:21,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2022-12-13 20:01:21,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2022-12-13 20:01:21,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2022-12-13 20:01:21,306 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2022-12-13 20:01:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:21,307 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2022-12-13 20:01:21,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2022-12-13 20:01:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 20:01:21,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:21,309 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:21,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:01:21,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:21,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1330050266, now seen corresponding path program 1 times [2022-12-13 20:01:21,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:21,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918475681] [2022-12-13 20:01:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:21,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:21,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 20:01:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 20:01:21,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:21,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918475681] [2022-12-13 20:01:21,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918475681] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:21,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851508721] [2022-12-13 20:01:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:21,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:21,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:21,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:21,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:01:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:21,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:01:21,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:21,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:21,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851508721] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:21,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:21,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-12-13 20:01:21,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242729122] [2022-12-13 20:01:21,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:21,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 20:01:21,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:21,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 20:01:21,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-12-13 20:01:21,614 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 20:01:21,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:21,930 INFO L93 Difference]: Finished difference Result 206 states and 275 transitions. [2022-12-13 20:01:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 20:01:21,930 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-12-13 20:01:21,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:21,932 INFO L225 Difference]: With dead ends: 206 [2022-12-13 20:01:21,932 INFO L226 Difference]: Without dead ends: 137 [2022-12-13 20:01:21,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-12-13 20:01:21,934 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 138 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:21,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 455 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:01:21,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-13 20:01:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2022-12-13 20:01:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2022-12-13 20:01:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2022-12-13 20:01:21,954 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30 [2022-12-13 20:01:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:21,955 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2022-12-13 20:01:21,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 20:01:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2022-12-13 20:01:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 20:01:21,956 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:21,957 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:21,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 20:01:22,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:22,159 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:22,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:22,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1193456114, now seen corresponding path program 2 times [2022-12-13 20:01:22,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:22,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061186433] [2022-12-13 20:01:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:22,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:22,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:01:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:01:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 20:01:22,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:22,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061186433] [2022-12-13 20:01:22,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061186433] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:22,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731399379] [2022-12-13 20:01:22,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:01:22,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:22,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:22,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:01:22,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:01:22,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:22,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:01:22,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 20:01:22,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:22,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731399379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:22,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:01:22,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-12-13 20:01:22,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253204387] [2022-12-13 20:01:22,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:22,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:01:22,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:01:22,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:01:22,420 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:22,445 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2022-12-13 20:01:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:01:22,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-12-13 20:01:22,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:22,446 INFO L225 Difference]: With dead ends: 131 [2022-12-13 20:01:22,447 INFO L226 Difference]: Without dead ends: 130 [2022-12-13 20:01:22,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:01:22,448 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:22,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 138 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-13 20:01:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2022-12-13 20:01:22,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.15625) internal successors, (111), 99 states have internal predecessors, (111), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2022-12-13 20:01:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2022-12-13 20:01:22,461 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42 [2022-12-13 20:01:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:22,462 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2022-12-13 20:01:22,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2022-12-13 20:01:22,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 20:01:22,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:22,463 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:22,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:01:22,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 20:01:22,665 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:22,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:22,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1657566201, now seen corresponding path program 1 times [2022-12-13 20:01:22,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:22,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657319462] [2022-12-13 20:01:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:22,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:22,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:01:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:22,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 20:01:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 20:01:22,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:22,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657319462] [2022-12-13 20:01:22,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657319462] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:22,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005124893] [2022-12-13 20:01:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:22,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:22,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:22,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:22,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:01:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:22,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 20:01:22,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:23,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:23,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005124893] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:23,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:23,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 23 [2022-12-13 20:01:23,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447903204] [2022-12-13 20:01:23,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:23,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 20:01:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:23,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 20:01:23,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-12-13 20:01:23,183 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 20:01:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:23,669 INFO L93 Difference]: Finished difference Result 323 states and 423 transitions. [2022-12-13 20:01:23,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 20:01:23,670 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 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 [2022-12-13 20:01:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:23,671 INFO L225 Difference]: With dead ends: 323 [2022-12-13 20:01:23,671 INFO L226 Difference]: Without dead ends: 213 [2022-12-13 20:01:23,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2022-12-13 20:01:23,674 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 168 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:23,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 860 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:01:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-12-13 20:01:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 191. [2022-12-13 20:01:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 149 states have (on average 1.1543624161073827) internal successors, (172), 151 states have internal predecessors, (172), 25 states have call successors, (25), 10 states have call predecessors, (25), 13 states have return successors, (48), 29 states have call predecessors, (48), 24 states have call successors, (48) [2022-12-13 20:01:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 245 transitions. [2022-12-13 20:01:23,695 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 245 transitions. Word has length 43 [2022-12-13 20:01:23,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:23,695 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 245 transitions. [2022-12-13 20:01:23,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 20:01:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 245 transitions. [2022-12-13 20:01:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 20:01:23,697 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:23,697 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:23,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:01:23,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:23,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash 767040008, now seen corresponding path program 1 times [2022-12-13 20:01:23,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:23,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768247109] [2022-12-13 20:01:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 20:01:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:24,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 20:01:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-13 20:01:24,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:24,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768247109] [2022-12-13 20:01:24,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768247109] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:24,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001268812] [2022-12-13 20:01:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:24,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:24,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:24,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:24,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:01:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:24,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 20:01:24,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:01:24,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 20:01:24,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001268812] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:24,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:24,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 19] total 24 [2022-12-13 20:01:24,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806023995] [2022-12-13 20:01:24,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:24,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 20:01:24,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:24,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 20:01:24,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-12-13 20:01:24,472 INFO L87 Difference]: Start difference. First operand 191 states and 245 transitions. Second operand has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 20:01:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:24,991 INFO L93 Difference]: Finished difference Result 408 states and 525 transitions. [2022-12-13 20:01:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 20:01:24,991 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 60 [2022-12-13 20:01:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:24,993 INFO L225 Difference]: With dead ends: 408 [2022-12-13 20:01:24,993 INFO L226 Difference]: Without dead ends: 238 [2022-12-13 20:01:24,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 16 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 20:01:24,994 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 211 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:24,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 872 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:01:24,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-12-13 20:01:25,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 213. [2022-12-13 20:01:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 167 states have (on average 1.1497005988023952) internal successors, (192), 168 states have internal predecessors, (192), 28 states have call successors, (28), 11 states have call predecessors, (28), 14 states have return successors, (54), 33 states have call predecessors, (54), 27 states have call successors, (54) [2022-12-13 20:01:25,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 274 transitions. [2022-12-13 20:01:25,004 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 274 transitions. Word has length 60 [2022-12-13 20:01:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:25,004 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 274 transitions. [2022-12-13 20:01:25,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-13 20:01:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 274 transitions. [2022-12-13 20:01:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 20:01:25,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:25,005 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:25,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:01:25,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:25,206 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:25,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:25,206 INFO L85 PathProgramCache]: Analyzing trace with hash 561795286, now seen corresponding path program 2 times [2022-12-13 20:01:25,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:25,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083842648] [2022-12-13 20:01:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:25,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:25,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 20:01:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-13 20:01:25,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:25,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083842648] [2022-12-13 20:01:25,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083842648] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:25,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981538766] [2022-12-13 20:01:25,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:01:25,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:25,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:25,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:25,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:01:25,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:01:25,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:25,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:01:25,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-13 20:01:25,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:25,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981538766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:25,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:01:25,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-12-13 20:01:25,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101188816] [2022-12-13 20:01:25,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:25,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:01:25,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:01:25,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:01:25,332 INFO L87 Difference]: Start difference. First operand 213 states and 274 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:25,355 INFO L93 Difference]: Finished difference Result 227 states and 294 transitions. [2022-12-13 20:01:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:01:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2022-12-13 20:01:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:25,357 INFO L225 Difference]: With dead ends: 227 [2022-12-13 20:01:25,357 INFO L226 Difference]: Without dead ends: 226 [2022-12-13 20:01:25,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:01:25,358 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:25,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 138 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-12-13 20:01:25,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 221. [2022-12-13 20:01:25,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 175 states have (on average 1.1428571428571428) internal successors, (200), 172 states have internal predecessors, (200), 28 states have call successors, (28), 11 states have call predecessors, (28), 14 states have return successors, (54), 37 states have call predecessors, (54), 27 states have call successors, (54) [2022-12-13 20:01:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 282 transitions. [2022-12-13 20:01:25,373 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 282 transitions. Word has length 60 [2022-12-13 20:01:25,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:25,373 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 282 transitions. [2022-12-13 20:01:25,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 282 transitions. [2022-12-13 20:01:25,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 20:01:25,374 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:25,375 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:25,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:01:25,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:25,575 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:25,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash 235784779, now seen corresponding path program 1 times [2022-12-13 20:01:25,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:25,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249668607] [2022-12-13 20:01:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:25,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:25,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 20:01:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-13 20:01:25,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:25,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249668607] [2022-12-13 20:01:25,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249668607] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:25,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852033195] [2022-12-13 20:01:25,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:25,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:25,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:25,665 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:25,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:01:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:25,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 20:01:25,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-13 20:01:25,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:25,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852033195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:25,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:01:25,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-12-13 20:01:25,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553035752] [2022-12-13 20:01:25,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:25,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:01:25,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:01:25,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:01:25,740 INFO L87 Difference]: Start difference. First operand 221 states and 282 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:25,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:25,771 INFO L93 Difference]: Finished difference Result 239 states and 303 transitions. [2022-12-13 20:01:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:01:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2022-12-13 20:01:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:25,773 INFO L225 Difference]: With dead ends: 239 [2022-12-13 20:01:25,773 INFO L226 Difference]: Without dead ends: 238 [2022-12-13 20:01:25,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:01:25,774 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 4 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:25,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 147 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-12-13 20:01:25,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 217. [2022-12-13 20:01:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 172 states have (on average 1.1453488372093024) internal successors, (197), 169 states have internal predecessors, (197), 27 states have call successors, (27), 11 states have call predecessors, (27), 14 states have return successors, (51), 36 states have call predecessors, (51), 26 states have call successors, (51) [2022-12-13 20:01:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 275 transitions. [2022-12-13 20:01:25,789 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 275 transitions. Word has length 61 [2022-12-13 20:01:25,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:25,789 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 275 transitions. [2022-12-13 20:01:25,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 20:01:25,789 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 275 transitions. [2022-12-13 20:01:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 20:01:25,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:25,790 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:25,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:01:25,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 20:01:25,992 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:25,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:25,993 INFO L85 PathProgramCache]: Analyzing trace with hash -270457490, now seen corresponding path program 1 times [2022-12-13 20:01:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:25,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062924563] [2022-12-13 20:01:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 20:01:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 20:01:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 20:01:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-13 20:01:26,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:26,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062924563] [2022-12-13 20:01:26,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062924563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:26,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:26,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:01:26,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132636231] [2022-12-13 20:01:26,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:26,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:01:26,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:26,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:01:26,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:26,144 INFO L87 Difference]: Start difference. First operand 217 states and 275 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 20:01:26,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:26,176 INFO L93 Difference]: Finished difference Result 229 states and 287 transitions. [2022-12-13 20:01:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:01:26,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-12-13 20:01:26,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:26,178 INFO L225 Difference]: With dead ends: 229 [2022-12-13 20:01:26,178 INFO L226 Difference]: Without dead ends: 228 [2022-12-13 20:01:26,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:26,179 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:26,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 179 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-12-13 20:01:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 211. [2022-12-13 20:01:26,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 168 states have (on average 1.1488095238095237) internal successors, (193), 164 states have internal predecessors, (193), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (43), 35 states have call predecessors, (43), 25 states have call successors, (43) [2022-12-13 20:01:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 262 transitions. [2022-12-13 20:01:26,192 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 262 transitions. Word has length 77 [2022-12-13 20:01:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:26,192 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 262 transitions. [2022-12-13 20:01:26,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 20:01:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 262 transitions. [2022-12-13 20:01:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 20:01:26,193 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:26,193 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:26,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 20:01:26,194 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash -130477290, now seen corresponding path program 1 times [2022-12-13 20:01:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:26,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948617226] [2022-12-13 20:01:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:26,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 20:01:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:01:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-12-13 20:01:26,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:26,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948617226] [2022-12-13 20:01:26,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948617226] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:26,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202165503] [2022-12-13 20:01:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:26,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:26,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:26,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:26,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:01:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:26,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 20:01:26,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:01:26,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 20:01:26,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202165503] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:26,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:26,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 19, 19] total 23 [2022-12-13 20:01:26,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390392920] [2022-12-13 20:01:26,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:26,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 20:01:26,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:26,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 20:01:26,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-12-13 20:01:26,674 INFO L87 Difference]: Start difference. First operand 211 states and 262 transitions. Second operand has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (16), 8 states have call predecessors, (16), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 20:01:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:27,242 INFO L93 Difference]: Finished difference Result 585 states and 775 transitions. [2022-12-13 20:01:27,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 20:01:27,242 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (16), 8 states have call predecessors, (16), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 79 [2022-12-13 20:01:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:27,244 INFO L225 Difference]: With dead ends: 585 [2022-12-13 20:01:27,244 INFO L226 Difference]: Without dead ends: 395 [2022-12-13 20:01:27,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 141 SyntacticMatches, 16 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=1494, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 20:01:27,247 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 307 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:27,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 214 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:01:27,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-12-13 20:01:27,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 362. [2022-12-13 20:01:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 290 states have (on average 1.1413793103448275) internal successors, (331), 281 states have internal predecessors, (331), 45 states have call successors, (45), 18 states have call predecessors, (45), 23 states have return successors, (77), 62 states have call predecessors, (77), 44 states have call successors, (77) [2022-12-13 20:01:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 453 transitions. [2022-12-13 20:01:27,273 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 453 transitions. Word has length 79 [2022-12-13 20:01:27,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:27,274 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 453 transitions. [2022-12-13 20:01:27,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.8181818181818183) internal successors, (84), 16 states have internal predecessors, (84), 11 states have call successors, (16), 8 states have call predecessors, (16), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 20:01:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 453 transitions. [2022-12-13 20:01:27,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 20:01:27,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:27,275 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:27,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 20:01:27,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 20:01:27,477 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:27,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash 562828101, now seen corresponding path program 1 times [2022-12-13 20:01:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:27,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996804879] [2022-12-13 20:01:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 20:01:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 20:01:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 20:01:27,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:27,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996804879] [2022-12-13 20:01:27,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996804879] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:27,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:27,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:01:27,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813826315] [2022-12-13 20:01:27,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:27,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:01:27,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:01:27,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:27,576 INFO L87 Difference]: Start difference. First operand 362 states and 453 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 20:01:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:27,598 INFO L93 Difference]: Finished difference Result 390 states and 492 transitions. [2022-12-13 20:01:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:01:27,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-12-13 20:01:27,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:27,600 INFO L225 Difference]: With dead ends: 390 [2022-12-13 20:01:27,600 INFO L226 Difference]: Without dead ends: 389 [2022-12-13 20:01:27,601 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 [2022-12-13 20:01:27,601 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:27,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:27,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-12-13 20:01:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 375. [2022-12-13 20:01:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 301 states have (on average 1.1362126245847175) internal successors, (342), 291 states have internal predecessors, (342), 45 states have call successors, (45), 18 states have call predecessors, (45), 25 states have return successors, (86), 65 states have call predecessors, (86), 44 states have call successors, (86) [2022-12-13 20:01:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 473 transitions. [2022-12-13 20:01:27,614 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 473 transitions. Word has length 74 [2022-12-13 20:01:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:27,614 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 473 transitions. [2022-12-13 20:01:27,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 20:01:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 473 transitions. [2022-12-13 20:01:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 20:01:27,615 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:27,615 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:27,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 20:01:27,615 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash 635540138, now seen corresponding path program 1 times [2022-12-13 20:01:27,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:27,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986839616] [2022-12-13 20:01:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:27,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 20:01:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 20:01:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 20:01:27,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:27,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986839616] [2022-12-13 20:01:27,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986839616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:27,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:27,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 20:01:27,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238787637] [2022-12-13 20:01:27,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:27,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 20:01:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 20:01:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 20:01:27,724 INFO L87 Difference]: Start difference. First operand 375 states and 473 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 20:01:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:27,793 INFO L93 Difference]: Finished difference Result 481 states and 622 transitions. [2022-12-13 20:01:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 20:01:27,793 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 75 [2022-12-13 20:01:27,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:27,795 INFO L225 Difference]: With dead ends: 481 [2022-12-13 20:01:27,795 INFO L226 Difference]: Without dead ends: 480 [2022-12-13 20:01:27,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:01:27,796 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:27,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 228 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:27,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-12-13 20:01:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 401. [2022-12-13 20:01:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 320 states have (on average 1.128125) internal successors, (361), 312 states have internal predecessors, (361), 48 states have call successors, (48), 18 states have call predecessors, (48), 29 states have return successors, (111), 70 states have call predecessors, (111), 47 states have call successors, (111) [2022-12-13 20:01:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 520 transitions. [2022-12-13 20:01:27,816 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 520 transitions. Word has length 75 [2022-12-13 20:01:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:27,816 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 520 transitions. [2022-12-13 20:01:27,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 20:01:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 520 transitions. [2022-12-13 20:01:27,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 20:01:27,818 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:27,818 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:27,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 20:01:27,818 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:27,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1301455149, now seen corresponding path program 1 times [2022-12-13 20:01:27,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:27,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072425604] [2022-12-13 20:01:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:27,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 20:01:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 20:01:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:01:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-12-13 20:01:27,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072425604] [2022-12-13 20:01:27,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072425604] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651201948] [2022-12-13 20:01:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:27,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:27,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:27,873 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:27,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 20:01:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:27,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 20:01:27,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 20:01:28,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:01:28,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651201948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:28,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 20:01:28,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4] total 24 [2022-12-13 20:01:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548116783] [2022-12-13 20:01:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:28,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 20:01:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 20:01:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-12-13 20:01:28,066 INFO L87 Difference]: Start difference. First operand 401 states and 520 transitions. Second operand has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 20:01:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:28,378 INFO L93 Difference]: Finished difference Result 776 states and 1042 transitions. [2022-12-13 20:01:28,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 20:01:28,378 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 96 [2022-12-13 20:01:28,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:28,380 INFO L225 Difference]: With dead ends: 776 [2022-12-13 20:01:28,380 INFO L226 Difference]: Without dead ends: 433 [2022-12-13 20:01:28,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=1172, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 20:01:28,382 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 285 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:28,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 248 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:01:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-12-13 20:01:28,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 424. [2022-12-13 20:01:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 337 states have (on average 1.1275964391691395) internal successors, (380), 331 states have internal predecessors, (380), 50 states have call successors, (50), 20 states have call predecessors, (50), 33 states have return successors, (113), 72 states have call predecessors, (113), 49 states have call successors, (113) [2022-12-13 20:01:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 543 transitions. [2022-12-13 20:01:28,402 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 543 transitions. Word has length 96 [2022-12-13 20:01:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:28,402 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 543 transitions. [2022-12-13 20:01:28,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 12 states have internal predecessors, (69), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 20:01:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 543 transitions. [2022-12-13 20:01:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 20:01:28,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:28,403 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:28,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 20:01:28,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:28,604 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash -780505312, now seen corresponding path program 1 times [2022-12-13 20:01:28,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:28,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879556389] [2022-12-13 20:01:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:28,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 20:01:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:01:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 20:01:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 20:01:28,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:28,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879556389] [2022-12-13 20:01:28,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879556389] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:01:28,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:01:28,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:01:28,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513365946] [2022-12-13 20:01:28,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:01:28,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:01:28,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:28,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:01:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:01:28,664 INFO L87 Difference]: Start difference. First operand 424 states and 543 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 20:01:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:28,695 INFO L93 Difference]: Finished difference Result 438 states and 559 transitions. [2022-12-13 20:01:28,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:01:28,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 79 [2022-12-13 20:01:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:28,697 INFO L225 Difference]: With dead ends: 438 [2022-12-13 20:01:28,697 INFO L226 Difference]: Without dead ends: 437 [2022-12-13 20:01:28,698 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 [2022-12-13 20:01:28,698 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:28,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 143 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:01:28,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-12-13 20:01:28,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 424. [2022-12-13 20:01:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 337 states have (on average 1.1216617210682494) internal successors, (378), 331 states have internal predecessors, (378), 50 states have call successors, (50), 20 states have call predecessors, (50), 33 states have return successors, (113), 72 states have call predecessors, (113), 49 states have call successors, (113) [2022-12-13 20:01:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 541 transitions. [2022-12-13 20:01:28,713 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 541 transitions. Word has length 79 [2022-12-13 20:01:28,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:28,713 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 541 transitions. [2022-12-13 20:01:28,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 20:01:28,713 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 541 transitions. [2022-12-13 20:01:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 20:01:28,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:28,714 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:28,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 20:01:28,714 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:28,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1917758018, now seen corresponding path program 1 times [2022-12-13 20:01:28,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:28,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569000080] [2022-12-13 20:01:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:28,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 20:01:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 20:01:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 11 proven. 80 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 20:01:28,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:28,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569000080] [2022-12-13 20:01:28,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569000080] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:28,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959038699] [2022-12-13 20:01:28,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:28,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:28,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:28,930 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:28,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 20:01:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:28,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 20:01:28,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 20:01:29,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 20:01:29,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959038699] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:29,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:29,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 24 [2022-12-13 20:01:29,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836906560] [2022-12-13 20:01:29,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:29,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 20:01:29,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:29,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 20:01:29,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-12-13 20:01:29,262 INFO L87 Difference]: Start difference. First operand 424 states and 541 transitions. Second operand has 24 states, 23 states have (on average 4.391304347826087) internal successors, (101), 19 states have internal predecessors, (101), 12 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-13 20:01:29,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:29,640 INFO L93 Difference]: Finished difference Result 829 states and 1111 transitions. [2022-12-13 20:01:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 20:01:29,641 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.391304347826087) internal successors, (101), 19 states have internal predecessors, (101), 12 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 88 [2022-12-13 20:01:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:29,644 INFO L225 Difference]: With dead ends: 829 [2022-12-13 20:01:29,644 INFO L226 Difference]: Without dead ends: 481 [2022-12-13 20:01:29,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 179 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 20:01:29,647 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 202 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:29,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 604 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:01:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-12-13 20:01:29,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 432. [2022-12-13 20:01:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 343 states have (on average 1.119533527696793) internal successors, (384), 337 states have internal predecessors, (384), 52 states have call successors, (52), 20 states have call predecessors, (52), 33 states have return successors, (111), 74 states have call predecessors, (111), 51 states have call successors, (111) [2022-12-13 20:01:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 547 transitions. [2022-12-13 20:01:29,672 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 547 transitions. Word has length 88 [2022-12-13 20:01:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:29,672 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 547 transitions. [2022-12-13 20:01:29,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.391304347826087) internal successors, (101), 19 states have internal predecessors, (101), 12 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-13 20:01:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 547 transitions. [2022-12-13 20:01:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 20:01:29,673 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:29,673 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:29,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 20:01:29,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 20:01:29,874 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:29,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:29,874 INFO L85 PathProgramCache]: Analyzing trace with hash 187356391, now seen corresponding path program 1 times [2022-12-13 20:01:29,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:29,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706209534] [2022-12-13 20:01:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:29,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:29,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 20:01:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:29,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:29,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:29,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 20:01:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 20:01:29,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:29,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706209534] [2022-12-13 20:01:29,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706209534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:29,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285285482] [2022-12-13 20:01:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:29,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:29,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:30,000 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:30,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 20:01:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:30,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:01:30,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 20:01:30,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 20:01:30,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285285482] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:30,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:30,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2022-12-13 20:01:30,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818357155] [2022-12-13 20:01:30,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:30,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 20:01:30,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:30,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 20:01:30,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-12-13 20:01:30,225 INFO L87 Difference]: Start difference. First operand 432 states and 547 transitions. Second operand has 17 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 20:01:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:30,460 INFO L93 Difference]: Finished difference Result 781 states and 989 transitions. [2022-12-13 20:01:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:01:30,461 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 89 [2022-12-13 20:01:30,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:30,463 INFO L225 Difference]: With dead ends: 781 [2022-12-13 20:01:30,463 INFO L226 Difference]: Without dead ends: 436 [2022-12-13 20:01:30,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 180 SyntacticMatches, 12 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-12-13 20:01:30,466 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 163 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:30,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 491 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:01:30,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-12-13 20:01:30,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 426. [2022-12-13 20:01:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 337 states have (on average 1.1216617210682494) internal successors, (378), 334 states have internal predecessors, (378), 52 states have call successors, (52), 20 states have call predecessors, (52), 33 states have return successors, (108), 71 states have call predecessors, (108), 51 states have call successors, (108) [2022-12-13 20:01:30,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 538 transitions. [2022-12-13 20:01:30,487 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 538 transitions. Word has length 89 [2022-12-13 20:01:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:30,487 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 538 transitions. [2022-12-13 20:01:30,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.375) internal successors, (70), 12 states have internal predecessors, (70), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 20:01:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 538 transitions. [2022-12-13 20:01:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 20:01:30,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:30,489 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:30,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 20:01:30,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:30,689 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:30,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:30,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1711008520, now seen corresponding path program 1 times [2022-12-13 20:01:30,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:30,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830319871] [2022-12-13 20:01:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 20:01:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:30,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 20:01:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:30,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:30,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:01:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 63 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 20:01:30,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:30,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830319871] [2022-12-13 20:01:30,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830319871] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:30,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073737233] [2022-12-13 20:01:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:30,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:30,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:30,875 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:30,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 20:01:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:30,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:01:30,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-12-13 20:01:31,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-13 20:01:31,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073737233] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:31,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:31,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8, 7] total 31 [2022-12-13 20:01:31,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043742044] [2022-12-13 20:01:31,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:31,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 20:01:31,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:31,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 20:01:31,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2022-12-13 20:01:31,172 INFO L87 Difference]: Start difference. First operand 426 states and 538 transitions. Second operand has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-13 20:01:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:32,449 INFO L93 Difference]: Finished difference Result 893 states and 1217 transitions. [2022-12-13 20:01:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 20:01:32,450 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 92 [2022-12-13 20:01:32,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:32,453 INFO L225 Difference]: With dead ends: 893 [2022-12-13 20:01:32,453 INFO L226 Difference]: Without dead ends: 543 [2022-12-13 20:01:32,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=771, Invalid=4631, Unknown=0, NotChecked=0, Total=5402 [2022-12-13 20:01:32,457 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 315 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:32,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 218 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 20:01:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-12-13 20:01:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 444. [2022-12-13 20:01:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 350 states have (on average 1.1114285714285714) internal successors, (389), 349 states have internal predecessors, (389), 55 states have call successors, (55), 20 states have call predecessors, (55), 35 states have return successors, (121), 74 states have call predecessors, (121), 54 states have call successors, (121) [2022-12-13 20:01:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 565 transitions. [2022-12-13 20:01:32,484 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 565 transitions. Word has length 92 [2022-12-13 20:01:32,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:32,484 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 565 transitions. [2022-12-13 20:01:32,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 25 states have internal predecessors, (99), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2022-12-13 20:01:32,484 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 565 transitions. [2022-12-13 20:01:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 20:01:32,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:32,485 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:32,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 20:01:32,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:32,686 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:32,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:32,688 INFO L85 PathProgramCache]: Analyzing trace with hash -806445377, now seen corresponding path program 1 times [2022-12-13 20:01:32,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:32,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112488877] [2022-12-13 20:01:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:32,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 20:01:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:32,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:01:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:32,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 20:01:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:32,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 20:01:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 41 proven. 73 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 20:01:32,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:32,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112488877] [2022-12-13 20:01:32,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112488877] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:32,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009759551] [2022-12-13 20:01:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:32,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:32,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:32,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:32,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 20:01:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:32,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 20:01:32,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-12-13 20:01:33,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:33,396 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-12-13 20:01:33,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009759551] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:33,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:33,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 11] total 34 [2022-12-13 20:01:33,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959329735] [2022-12-13 20:01:33,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:33,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 20:01:33,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:33,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 20:01:33,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 20:01:33,397 INFO L87 Difference]: Start difference. First operand 444 states and 565 transitions. Second operand has 34 states, 33 states have (on average 3.303030303030303) internal successors, (109), 28 states have internal predecessors, (109), 14 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 20:01:34,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:34,752 INFO L93 Difference]: Finished difference Result 1032 states and 1460 transitions. [2022-12-13 20:01:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-12-13 20:01:34,753 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.303030303030303) internal successors, (109), 28 states have internal predecessors, (109), 14 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 93 [2022-12-13 20:01:34,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:34,755 INFO L225 Difference]: With dead ends: 1032 [2022-12-13 20:01:34,755 INFO L226 Difference]: Without dead ends: 642 [2022-12-13 20:01:34,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 199 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1063, Invalid=7309, Unknown=0, NotChecked=0, Total=8372 [2022-12-13 20:01:34,758 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 410 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:34,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 283 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 20:01:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-12-13 20:01:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 521. [2022-12-13 20:01:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 413 states have (on average 1.1089588377723971) internal successors, (458), 405 states have internal predecessors, (458), 62 states have call successors, (62), 19 states have call predecessors, (62), 42 states have return successors, (210), 96 states have call predecessors, (210), 61 states have call successors, (210) [2022-12-13 20:01:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 730 transitions. [2022-12-13 20:01:34,784 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 730 transitions. Word has length 93 [2022-12-13 20:01:34,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:34,784 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 730 transitions. [2022-12-13 20:01:34,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.303030303030303) internal successors, (109), 28 states have internal predecessors, (109), 14 states have call successors, (17), 7 states have call predecessors, (17), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 20:01:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 730 transitions. [2022-12-13 20:01:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 20:01:34,785 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:34,785 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:34,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 20:01:34,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:34,985 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:34,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:34,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1769978552, now seen corresponding path program 1 times [2022-12-13 20:01:34,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:34,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374867737] [2022-12-13 20:01:34,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:34,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 20:01:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 20:01:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 20:01:35,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:35,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374867737] [2022-12-13 20:01:35,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374867737] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:35,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121212160] [2022-12-13 20:01:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:35,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:35,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:35,204 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:35,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 20:01:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:35,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 20:01:35,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-12-13 20:01:35,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-13 20:01:35,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121212160] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:35,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:35,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2022-12-13 20:01:35,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109453731] [2022-12-13 20:01:35,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:35,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 20:01:35,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 20:01:35,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-12-13 20:01:35,717 INFO L87 Difference]: Start difference. First operand 521 states and 730 transitions. Second operand has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2022-12-13 20:01:36,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:36,074 INFO L93 Difference]: Finished difference Result 1015 states and 1620 transitions. [2022-12-13 20:01:36,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 20:01:36,074 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 107 [2022-12-13 20:01:36,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:36,078 INFO L225 Difference]: With dead ends: 1015 [2022-12-13 20:01:36,078 INFO L226 Difference]: Without dead ends: 1013 [2022-12-13 20:01:36,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 213 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=369, Invalid=1983, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 20:01:36,079 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 64 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:36,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 688 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:01:36,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-12-13 20:01:36,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 703. [2022-12-13 20:01:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 557 states have (on average 1.0933572710951527) internal successors, (609), 547 states have internal predecessors, (609), 79 states have call successors, (79), 19 states have call predecessors, (79), 63 states have return successors, (351), 136 states have call predecessors, (351), 78 states have call successors, (351) [2022-12-13 20:01:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1039 transitions. [2022-12-13 20:01:36,113 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1039 transitions. Word has length 107 [2022-12-13 20:01:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:36,114 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1039 transitions. [2022-12-13 20:01:36,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2022-12-13 20:01:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1039 transitions. [2022-12-13 20:01:36,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 20:01:36,115 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:36,115 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:36,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 20:01:36,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 20:01:36,316 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:36,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash -965239639, now seen corresponding path program 1 times [2022-12-13 20:01:36,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:36,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390682435] [2022-12-13 20:01:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:36,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 20:01:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 20:01:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 20:01:36,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:36,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390682435] [2022-12-13 20:01:36,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390682435] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:36,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291087204] [2022-12-13 20:01:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:36,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:36,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:36,602 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:36,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 20:01:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:36,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 20:01:36,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 20:01:36,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-13 20:01:37,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291087204] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:37,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:37,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2022-12-13 20:01:37,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460447567] [2022-12-13 20:01:37,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:37,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 20:01:37,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:37,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 20:01:37,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-12-13 20:01:37,081 INFO L87 Difference]: Start difference. First operand 703 states and 1039 transitions. Second operand has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2022-12-13 20:01:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:37,346 INFO L93 Difference]: Finished difference Result 1141 states and 1840 transitions. [2022-12-13 20:01:37,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 20:01:37,346 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) Word has length 108 [2022-12-13 20:01:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:37,355 INFO L225 Difference]: With dead ends: 1141 [2022-12-13 20:01:37,355 INFO L226 Difference]: Without dead ends: 1139 [2022-12-13 20:01:37,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 215 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=1189, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 20:01:37,357 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 29 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:37,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 550 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:01:37,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-12-13 20:01:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 833. [2022-12-13 20:01:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 657 states have (on average 1.0730593607305936) internal successors, (705), 650 states have internal predecessors, (705), 91 states have call successors, (91), 19 states have call predecessors, (91), 81 states have return successors, (580), 163 states have call predecessors, (580), 90 states have call successors, (580) [2022-12-13 20:01:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1376 transitions. [2022-12-13 20:01:37,402 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1376 transitions. Word has length 108 [2022-12-13 20:01:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:37,402 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1376 transitions. [2022-12-13 20:01:37,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2022-12-13 20:01:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1376 transitions. [2022-12-13 20:01:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 20:01:37,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:37,403 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 20:01:37,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 20:01:37,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 20:01:37,603 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1191063167, now seen corresponding path program 1 times [2022-12-13 20:01:37,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:37,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777106258] [2022-12-13 20:01:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:37,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:01:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 20:01:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-12-13 20:01:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777106258] [2022-12-13 20:01:37,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777106258] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:37,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483158451] [2022-12-13 20:01:37,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:37,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:37,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:37,762 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:37,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 20:01:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:37,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 20:01:37,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-12-13 20:01:37,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 68 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-12-13 20:01:38,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483158451] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:38,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:38,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 20 [2022-12-13 20:01:38,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181132870] [2022-12-13 20:01:38,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:38,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 20:01:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:38,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 20:01:38,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-12-13 20:01:38,061 INFO L87 Difference]: Start difference. First operand 833 states and 1376 transitions. Second operand has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 16 states have internal predecessors, (91), 11 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 20:01:38,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:38,328 INFO L93 Difference]: Finished difference Result 1807 states and 3054 transitions. [2022-12-13 20:01:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 20:01:38,329 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 16 states have internal predecessors, (91), 11 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) Word has length 142 [2022-12-13 20:01:38,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:38,334 INFO L225 Difference]: With dead ends: 1807 [2022-12-13 20:01:38,334 INFO L226 Difference]: Without dead ends: 983 [2022-12-13 20:01:38,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 296 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-12-13 20:01:38,338 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 192 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:38,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 391 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:01:38,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-12-13 20:01:38,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 937. [2022-12-13 20:01:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 739 states have (on average 1.0744248985115021) internal successors, (794), 732 states have internal predecessors, (794), 103 states have call successors, (103), 22 states have call predecessors, (103), 91 states have return successors, (670), 182 states have call predecessors, (670), 102 states have call successors, (670) [2022-12-13 20:01:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1567 transitions. [2022-12-13 20:01:38,381 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1567 transitions. Word has length 142 [2022-12-13 20:01:38,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:38,381 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1567 transitions. [2022-12-13 20:01:38,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 16 states have internal predecessors, (91), 11 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-13 20:01:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1567 transitions. [2022-12-13 20:01:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-13 20:01:38,382 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:38,382 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2022-12-13 20:01:38,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 20:01:38,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 20:01:38,583 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1146651909, now seen corresponding path program 2 times [2022-12-13 20:01:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:38,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66164188] [2022-12-13 20:01:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:38,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:01:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 20:01:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 121 proven. 139 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-12-13 20:01:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:38,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66164188] [2022-12-13 20:01:38,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66164188] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:38,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724818135] [2022-12-13 20:01:38,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:01:38,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:38,810 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:38,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 20:01:38,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:01:38,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:38,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 20:01:38,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 172 proven. 151 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-12-13 20:01:39,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 172 proven. 157 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-12-13 20:01:39,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724818135] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:39,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:39,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 19] total 27 [2022-12-13 20:01:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441259755] [2022-12-13 20:01:39,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:39,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 20:01:39,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 20:01:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-12-13 20:01:39,413 INFO L87 Difference]: Start difference. First operand 937 states and 1567 transitions. Second operand has 27 states, 26 states have (on average 4.923076923076923) internal successors, (128), 23 states have internal predecessors, (128), 16 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 9 states have call predecessors, (20), 12 states have call successors, (20) [2022-12-13 20:01:39,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:39,892 INFO L93 Difference]: Finished difference Result 1839 states and 3560 transitions. [2022-12-13 20:01:39,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 20:01:39,892 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.923076923076923) internal successors, (128), 23 states have internal predecessors, (128), 16 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 9 states have call predecessors, (20), 12 states have call successors, (20) Word has length 180 [2022-12-13 20:01:39,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:39,899 INFO L225 Difference]: With dead ends: 1839 [2022-12-13 20:01:39,899 INFO L226 Difference]: Without dead ends: 976 [2022-12-13 20:01:39,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 373 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=308, Invalid=1584, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 20:01:39,908 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 236 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:39,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 292 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:01:39,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2022-12-13 20:01:39,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 902. [2022-12-13 20:01:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 712 states have (on average 1.0730337078651686) internal successors, (764), 704 states have internal predecessors, (764), 99 states have call successors, (99), 24 states have call predecessors, (99), 87 states have return successors, (597), 173 states have call predecessors, (597), 98 states have call successors, (597) [2022-12-13 20:01:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1460 transitions. [2022-12-13 20:01:39,966 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1460 transitions. Word has length 180 [2022-12-13 20:01:39,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:39,966 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1460 transitions. [2022-12-13 20:01:39,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.923076923076923) internal successors, (128), 23 states have internal predecessors, (128), 16 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 9 states have call predecessors, (20), 12 states have call successors, (20) [2022-12-13 20:01:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1460 transitions. [2022-12-13 20:01:39,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-13 20:01:39,967 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:39,967 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2022-12-13 20:01:39,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 20:01:40,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 20:01:40,168 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:40,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1162543835, now seen corresponding path program 3 times [2022-12-13 20:01:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:40,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523321465] [2022-12-13 20:01:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:01:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 20:01:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:01:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 20:01:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 20:01:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 133 proven. 141 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-12-13 20:01:40,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:40,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523321465] [2022-12-13 20:01:40,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523321465] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:40,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067129114] [2022-12-13 20:01:40,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:01:40,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:40,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:40,385 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:40,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 20:01:40,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 20:01:40,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:40,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 20:01:40,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 151 proven. 6 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-12-13 20:01:40,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 151 proven. 6 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-12-13 20:01:40,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067129114] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:40,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:40,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 25 [2022-12-13 20:01:40,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524997628] [2022-12-13 20:01:40,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:40,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 20:01:40,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:40,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 20:01:40,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-12-13 20:01:40,783 INFO L87 Difference]: Start difference. First operand 902 states and 1460 transitions. Second operand has 25 states, 24 states have (on average 4.666666666666667) internal successors, (112), 21 states have internal predecessors, (112), 11 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-13 20:01:41,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:41,150 INFO L93 Difference]: Finished difference Result 1388 states and 2318 transitions. [2022-12-13 20:01:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 20:01:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.666666666666667) internal successors, (112), 21 states have internal predecessors, (112), 11 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 180 [2022-12-13 20:01:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:41,153 INFO L225 Difference]: With dead ends: 1388 [2022-12-13 20:01:41,153 INFO L226 Difference]: Without dead ends: 553 [2022-12-13 20:01:41,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 385 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 20:01:41,157 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 264 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:41,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 241 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:01:41,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-12-13 20:01:41,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 504. [2022-12-13 20:01:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 397 states have (on average 1.0604534005037782) internal successors, (421), 398 states have internal predecessors, (421), 62 states have call successors, (62), 27 states have call predecessors, (62), 43 states have return successors, (160), 78 states have call predecessors, (160), 61 states have call successors, (160) [2022-12-13 20:01:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 643 transitions. [2022-12-13 20:01:41,175 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 643 transitions. Word has length 180 [2022-12-13 20:01:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:41,175 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 643 transitions. [2022-12-13 20:01:41,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.666666666666667) internal successors, (112), 21 states have internal predecessors, (112), 11 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-13 20:01:41,176 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 643 transitions. [2022-12-13 20:01:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-12-13 20:01:41,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:41,176 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:01:41,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 20:01:41,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:41,377 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:41,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1976824769, now seen corresponding path program 4 times [2022-12-13 20:01:41,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:41,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529198227] [2022-12-13 20:01:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:41,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 20:01:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 20:01:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-12-13 20:01:41,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:41,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529198227] [2022-12-13 20:01:41,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529198227] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:41,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977888062] [2022-12-13 20:01:41,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:01:41,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:41,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:41,781 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:41,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 20:01:41,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:01:41,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:41,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 20:01:41,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-12-13 20:01:42,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-12-13 20:01:42,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977888062] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:42,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:42,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2022-12-13 20:01:42,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894944417] [2022-12-13 20:01:42,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:42,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 20:01:42,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:42,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 20:01:42,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 20:01:42,793 INFO L87 Difference]: Start difference. First operand 504 states and 643 transitions. Second operand has 37 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 37 states have internal predecessors, (100), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-13 20:01:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:43,161 INFO L93 Difference]: Finished difference Result 822 states and 1084 transitions. [2022-12-13 20:01:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 20:01:43,161 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 37 states have internal predecessors, (100), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) Word has length 161 [2022-12-13 20:01:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:43,167 INFO L225 Difference]: With dead ends: 822 [2022-12-13 20:01:43,167 INFO L226 Difference]: Without dead ends: 805 [2022-12-13 20:01:43,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 326 SyntacticMatches, 16 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=2035, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 20:01:43,168 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 38 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:43,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 814 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:01:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-12-13 20:01:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 616. [2022-12-13 20:01:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 485 states have (on average 1.0391752577319588) internal successors, (504), 485 states have internal predecessors, (504), 73 states have call successors, (73), 27 states have call predecessors, (73), 56 states have return successors, (224), 103 states have call predecessors, (224), 72 states have call successors, (224) [2022-12-13 20:01:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 801 transitions. [2022-12-13 20:01:43,205 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 801 transitions. Word has length 161 [2022-12-13 20:01:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:43,205 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 801 transitions. [2022-12-13 20:01:43,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 37 states have internal predecessors, (100), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-13 20:01:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 801 transitions. [2022-12-13 20:01:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-12-13 20:01:43,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:43,208 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 14, 14, 14, 12, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 3, 2, 1, 1, 1, 1] [2022-12-13 20:01:43,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 20:01:43,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:43,409 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:43,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:43,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2037378504, now seen corresponding path program 2 times [2022-12-13 20:01:43,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:43,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928346334] [2022-12-13 20:01:43,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:43,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:01:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:01:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 20:01:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 20:01:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 294 proven. 242 refuted. 0 times theorem prover too weak. 897 trivial. 0 not checked. [2022-12-13 20:01:43,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:43,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928346334] [2022-12-13 20:01:43,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928346334] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:43,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904809369] [2022-12-13 20:01:43,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:01:43,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:43,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:43,774 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:43,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 20:01:43,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:01:43,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:43,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 20:01:43,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 365 proven. 278 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2022-12-13 20:01:44,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 365 proven. 290 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2022-12-13 20:01:44,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904809369] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:44,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:44,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 19] total 37 [2022-12-13 20:01:44,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813343932] [2022-12-13 20:01:44,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:44,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 20:01:44,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:44,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 20:01:44,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 20:01:44,676 INFO L87 Difference]: Start difference. First operand 616 states and 801 transitions. Second operand has 37 states, 35 states have (on average 4.742857142857143) internal successors, (166), 31 states have internal predecessors, (166), 23 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (26), 13 states have call predecessors, (26), 17 states have call successors, (26) [2022-12-13 20:01:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:45,490 INFO L93 Difference]: Finished difference Result 1240 states and 1779 transitions. [2022-12-13 20:01:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 20:01:45,491 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 4.742857142857143) internal successors, (166), 31 states have internal predecessors, (166), 23 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (26), 13 states have call predecessors, (26), 17 states have call successors, (26) Word has length 293 [2022-12-13 20:01:45,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:45,493 INFO L225 Difference]: With dead ends: 1240 [2022-12-13 20:01:45,493 INFO L226 Difference]: Without dead ends: 705 [2022-12-13 20:01:45,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 614 SyntacticMatches, 12 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=497, Invalid=3285, Unknown=0, NotChecked=0, Total=3782 [2022-12-13 20:01:45,496 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 305 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:45,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 638 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 20:01:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-12-13 20:01:45,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 652. [2022-12-13 20:01:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 515 states have (on average 1.0271844660194174) internal successors, (529), 514 states have internal predecessors, (529), 77 states have call successors, (77), 31 states have call predecessors, (77), 58 states have return successors, (210), 106 states have call predecessors, (210), 76 states have call successors, (210) [2022-12-13 20:01:45,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 816 transitions. [2022-12-13 20:01:45,518 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 816 transitions. Word has length 293 [2022-12-13 20:01:45,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:45,519 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 816 transitions. [2022-12-13 20:01:45,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 4.742857142857143) internal successors, (166), 31 states have internal predecessors, (166), 23 states have call successors, (29), 7 states have call predecessors, (29), 10 states have return successors, (26), 13 states have call predecessors, (26), 17 states have call successors, (26) [2022-12-13 20:01:45,519 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 816 transitions. [2022-12-13 20:01:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-12-13 20:01:45,520 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:45,520 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1] [2022-12-13 20:01:45,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 20:01:45,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:45,721 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:45,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:45,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1112815454, now seen corresponding path program 3 times [2022-12-13 20:01:45,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:45,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932047672] [2022-12-13 20:01:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:45,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:01:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 20:01:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 20:01:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 181 proven. 145 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2022-12-13 20:01:45,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:45,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932047672] [2022-12-13 20:01:45,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932047672] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:45,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258548477] [2022-12-13 20:01:45,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:01:45,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:45,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:45,917 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:45,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 20:01:46,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-13 20:01:46,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:46,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:01:46,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 420 proven. 4 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-12-13 20:01:46,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 97 proven. 103 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2022-12-13 20:01:46,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258548477] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:46,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:46,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 7] total 23 [2022-12-13 20:01:46,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625447234] [2022-12-13 20:01:46,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:46,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 20:01:46,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 20:01:46,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2022-12-13 20:01:46,304 INFO L87 Difference]: Start difference. First operand 652 states and 816 transitions. Second operand has 23 states, 22 states have (on average 5.454545454545454) internal successors, (120), 20 states have internal predecessors, (120), 11 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-12-13 20:01:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:46,670 INFO L93 Difference]: Finished difference Result 1195 states and 1568 transitions. [2022-12-13 20:01:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 20:01:46,670 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.454545454545454) internal successors, (120), 20 states have internal predecessors, (120), 11 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 215 [2022-12-13 20:01:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:46,672 INFO L225 Difference]: With dead ends: 1195 [2022-12-13 20:01:46,672 INFO L226 Difference]: Without dead ends: 606 [2022-12-13 20:01:46,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 462 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-12-13 20:01:46,679 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 156 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:46,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 475 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:01:46,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-12-13 20:01:46,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 582. [2022-12-13 20:01:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 462 states have (on average 1.0324675324675325) internal successors, (477), 458 states have internal predecessors, (477), 68 states have call successors, (68), 34 states have call predecessors, (68), 50 states have return successors, (143), 89 states have call predecessors, (143), 67 states have call successors, (143) [2022-12-13 20:01:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 688 transitions. [2022-12-13 20:01:46,697 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 688 transitions. Word has length 215 [2022-12-13 20:01:46,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:46,697 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 688 transitions. [2022-12-13 20:01:46,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.454545454545454) internal successors, (120), 20 states have internal predecessors, (120), 11 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-12-13 20:01:46,697 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 688 transitions. [2022-12-13 20:01:46,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-12-13 20:01:46,698 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:46,698 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2022-12-13 20:01:46,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 20:01:46,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:46,900 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:46,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:46,901 INFO L85 PathProgramCache]: Analyzing trace with hash 70522082, now seen corresponding path program 4 times [2022-12-13 20:01:46,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:46,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048983991] [2022-12-13 20:01:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:46,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:01:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:01:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 20:01:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-12-13 20:01:47,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:47,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048983991] [2022-12-13 20:01:47,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048983991] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:47,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399650736] [2022-12-13 20:01:47,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:01:47,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:47,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:47,666 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:47,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 20:01:47,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:01:47,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:47,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-13 20:01:47,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-12-13 20:01:48,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-12-13 20:01:49,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399650736] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:49,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:49,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47 [2022-12-13 20:01:49,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752896407] [2022-12-13 20:01:49,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:49,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 20:01:49,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 20:01:49,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 20:01:49,944 INFO L87 Difference]: Start difference. First operand 582 states and 688 transitions. Second operand has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2022-12-13 20:01:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:50,215 INFO L93 Difference]: Finished difference Result 721 states and 845 transitions. [2022-12-13 20:01:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-13 20:01:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) Word has length 253 [2022-12-13 20:01:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:50,219 INFO L225 Difference]: With dead ends: 721 [2022-12-13 20:01:50,219 INFO L226 Difference]: Without dead ends: 630 [2022-12-13 20:01:50,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 522 SyntacticMatches, 33 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=378, Invalid=2592, Unknown=0, NotChecked=0, Total=2970 [2022-12-13 20:01:50,222 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 20 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:50,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 654 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:01:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-12-13 20:01:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 551. [2022-12-13 20:01:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 438 states have (on average 1.0296803652968036) internal successors, (451), 434 states have internal predecessors, (451), 64 states have call successors, (64), 34 states have call predecessors, (64), 47 states have return successors, (114), 82 states have call predecessors, (114), 63 states have call successors, (114) [2022-12-13 20:01:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 629 transitions. [2022-12-13 20:01:50,248 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 629 transitions. Word has length 253 [2022-12-13 20:01:50,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:50,249 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 629 transitions. [2022-12-13 20:01:50,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2022-12-13 20:01:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 629 transitions. [2022-12-13 20:01:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-12-13 20:01:50,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:50,251 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 16, 15, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 6, 6, 4, 3, 1, 1, 1, 1] [2022-12-13 20:01:50,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-13 20:01:50,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 20:01:50,452 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1728735254, now seen corresponding path program 5 times [2022-12-13 20:01:50,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:50,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218641351] [2022-12-13 20:01:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:50,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 20:01:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 20:01:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-12-13 20:01:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 462 proven. 209 refuted. 0 times theorem prover too weak. 1597 trivial. 0 not checked. [2022-12-13 20:01:50,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:50,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218641351] [2022-12-13 20:01:50,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218641351] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:50,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892425224] [2022-12-13 20:01:50,826 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 20:01:50,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:50,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:50,826 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:50,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 20:01:50,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 20:01:50,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:50,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 20:01:50,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 1127 proven. 39 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2022-12-13 20:01:51,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 204 proven. 462 refuted. 0 times theorem prover too weak. 1602 trivial. 0 not checked. [2022-12-13 20:01:51,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892425224] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:51,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:51,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 28 [2022-12-13 20:01:51,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738120778] [2022-12-13 20:01:51,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:51,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 20:01:51,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 20:01:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2022-12-13 20:01:51,534 INFO L87 Difference]: Start difference. First operand 551 states and 629 transitions. Second operand has 28 states, 27 states have (on average 5.851851851851852) internal successors, (158), 26 states have internal predecessors, (158), 15 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (30), 15 states have call predecessors, (30), 13 states have call successors, (30) [2022-12-13 20:01:51,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:51,957 INFO L93 Difference]: Finished difference Result 989 states and 1160 transitions. [2022-12-13 20:01:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 20:01:51,958 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.851851851851852) internal successors, (158), 26 states have internal predecessors, (158), 15 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (30), 15 states have call predecessors, (30), 13 states have call successors, (30) Word has length 365 [2022-12-13 20:01:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:51,960 INFO L225 Difference]: With dead ends: 989 [2022-12-13 20:01:51,960 INFO L226 Difference]: Without dead ends: 498 [2022-12-13 20:01:51,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 786 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 20:01:51,962 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 232 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:51,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 339 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 20:01:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-12-13 20:01:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 486. [2022-12-13 20:01:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 388 states have (on average 1.0360824742268042) internal successors, (402), 384 states have internal predecessors, (402), 58 states have call successors, (58), 37 states have call predecessors, (58), 38 states have return successors, (85), 64 states have call predecessors, (85), 57 states have call successors, (85) [2022-12-13 20:01:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 545 transitions. [2022-12-13 20:01:51,977 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 545 transitions. Word has length 365 [2022-12-13 20:01:51,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:51,977 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 545 transitions. [2022-12-13 20:01:51,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.851851851851852) internal successors, (158), 26 states have internal predecessors, (158), 15 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (30), 15 states have call predecessors, (30), 13 states have call successors, (30) [2022-12-13 20:01:51,977 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 545 transitions. [2022-12-13 20:01:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-12-13 20:01:51,979 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:51,979 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 19, 18, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 5, 3, 1, 1, 1, 1] [2022-12-13 20:01:51,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-13 20:01:52,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 20:01:52,180 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:52,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1254866576, now seen corresponding path program 6 times [2022-12-13 20:01:52,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:52,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031575955] [2022-12-13 20:01:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:52,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:01:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 20:01:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-12-13 20:01:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:01:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 594 proven. 200 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2022-12-13 20:01:52,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:52,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031575955] [2022-12-13 20:01:52,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031575955] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:52,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845766403] [2022-12-13 20:01:52,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 20:01:52,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:52,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:52,571 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:52,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 20:01:52,679 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-12-13 20:01:52,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:01:52,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 20:01:52,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 632 proven. 41 refuted. 0 times theorem prover too weak. 1852 trivial. 0 not checked. [2022-12-13 20:01:52,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:01:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 632 proven. 42 refuted. 0 times theorem prover too weak. 1851 trivial. 0 not checked. [2022-12-13 20:01:53,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845766403] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:01:53,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:01:53,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 13] total 28 [2022-12-13 20:01:53,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675715947] [2022-12-13 20:01:53,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:01:53,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 20:01:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:01:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 20:01:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2022-12-13 20:01:53,339 INFO L87 Difference]: Start difference. First operand 486 states and 545 transitions. Second operand has 28 states, 27 states have (on average 5.296296296296297) internal successors, (143), 26 states have internal predecessors, (143), 15 states have call successors, (26), 3 states have call predecessors, (26), 8 states have return successors, (26), 14 states have call predecessors, (26), 13 states have call successors, (26) [2022-12-13 20:01:53,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:01:53,659 INFO L93 Difference]: Finished difference Result 854 states and 968 transitions. [2022-12-13 20:01:53,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 20:01:53,660 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.296296296296297) internal successors, (143), 26 states have internal predecessors, (143), 15 states have call successors, (26), 3 states have call predecessors, (26), 8 states have return successors, (26), 14 states have call predecessors, (26), 13 states have call successors, (26) Word has length 384 [2022-12-13 20:01:53,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:01:53,661 INFO L225 Difference]: With dead ends: 854 [2022-12-13 20:01:53,661 INFO L226 Difference]: Without dead ends: 495 [2022-12-13 20:01:53,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 828 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 20:01:53,662 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 133 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:01:53,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 446 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:01:53,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-12-13 20:01:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 483. [2022-12-13 20:01:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 386 states have (on average 1.0310880829015545) internal successors, (398), 381 states have internal predecessors, (398), 57 states have call successors, (57), 37 states have call predecessors, (57), 38 states have return successors, (80), 64 states have call predecessors, (80), 56 states have call successors, (80) [2022-12-13 20:01:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 535 transitions. [2022-12-13 20:01:53,676 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 535 transitions. Word has length 384 [2022-12-13 20:01:53,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:01:53,676 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 535 transitions. [2022-12-13 20:01:53,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.296296296296297) internal successors, (143), 26 states have internal predecessors, (143), 15 states have call successors, (26), 3 states have call predecessors, (26), 8 states have return successors, (26), 14 states have call predecessors, (26), 13 states have call successors, (26) [2022-12-13 20:01:53,677 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 535 transitions. [2022-12-13 20:01:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-12-13 20:01:53,678 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:01:53,678 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 17, 17, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 6, 4, 4, 1, 1, 1, 1] [2022-12-13 20:01:53,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-12-13 20:01:53,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 20:01:53,879 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:01:53,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:01:53,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1597629513, now seen corresponding path program 7 times [2022-12-13 20:01:53,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:01:53,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880755947] [2022-12-13 20:01:53,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:01:53,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:01:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:54,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:01:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 20:01:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-12-13 20:01:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:01:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:01:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:01:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:01:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:01:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 432 proven. 525 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2022-12-13 20:01:55,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:01:55,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880755947] [2022-12-13 20:01:55,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880755947] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:01:55,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275841665] [2022-12-13 20:01:55,578 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 20:01:55,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:01:55,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:01:55,579 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:01:55,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 20:01:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:01:55,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 81 conjunts are in the unsatisfiable core [2022-12-13 20:01:55,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:01:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 432 proven. 525 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2022-12-13 20:01:56,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2802 backedges. 585 proven. 468 refuted. 0 times theorem prover too weak. 1749 trivial. 0 not checked. [2022-12-13 20:02:00,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275841665] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:00,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:02:00,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 37] total 58 [2022-12-13 20:02:00,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673811336] [2022-12-13 20:02:00,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:00,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-13 20:02:00,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:00,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-13 20:02:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=3007, Unknown=0, NotChecked=0, Total=3422 [2022-12-13 20:02:00,581 INFO L87 Difference]: Start difference. First operand 483 states and 535 transitions. Second operand has 59 states, 58 states have (on average 2.6551724137931036) internal successors, (154), 59 states have internal predecessors, (154), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) [2022-12-13 20:02:00,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:02:00,780 INFO L93 Difference]: Finished difference Result 515 states and 568 transitions. [2022-12-13 20:02:00,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-13 20:02:00,781 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.6551724137931036) internal successors, (154), 59 states have internal predecessors, (154), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) Word has length 404 [2022-12-13 20:02:00,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:02:00,783 INFO L225 Difference]: With dead ends: 515 [2022-12-13 20:02:00,783 INFO L226 Difference]: Without dead ends: 411 [2022-12-13 20:02:00,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 848 SyntacticMatches, 62 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4609 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=478, Invalid=3428, Unknown=0, NotChecked=0, Total=3906 [2022-12-13 20:02:00,785 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 12 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:02:00,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 737 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:02:00,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-12-13 20:02:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 388. [2022-12-13 20:02:00,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 309 states have (on average 1.0194174757281553) internal successors, (315), 306 states have internal predecessors, (315), 46 states have call successors, (46), 31 states have call predecessors, (46), 32 states have return successors, (56), 50 states have call predecessors, (56), 45 states have call successors, (56) [2022-12-13 20:02:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 417 transitions. [2022-12-13 20:02:00,800 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 417 transitions. Word has length 404 [2022-12-13 20:02:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:02:00,800 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 417 transitions. [2022-12-13 20:02:00,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.6551724137931036) internal successors, (154), 59 states have internal predecessors, (154), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) [2022-12-13 20:02:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 417 transitions. [2022-12-13 20:02:00,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2022-12-13 20:02:00,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:02:00,804 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 30, 26, 25, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1] [2022-12-13 20:02:00,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 20:02:01,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 20:02:01,004 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:02:01,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash -626018904, now seen corresponding path program 5 times [2022-12-13 20:02:01,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:01,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638953722] [2022-12-13 20:02:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:01,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:02:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:02:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:02:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 20:02:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:02:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-12-13 20:02:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:02:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:02:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-12-13 20:02:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:02:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:02:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 20:02:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 1390 proven. 277 refuted. 0 times theorem prover too weak. 4992 trivial. 0 not checked. [2022-12-13 20:02:01,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:01,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638953722] [2022-12-13 20:02:01,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638953722] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:02:01,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422101121] [2022-12-13 20:02:01,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 20:02:01,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:01,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:01,599 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:01,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 20:02:01,794 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-12-13 20:02:01,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:02:01,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 20:02:01,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 777 proven. 1177 refuted. 0 times theorem prover too weak. 4705 trivial. 0 not checked. [2022-12-13 20:02:01,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6659 backedges. 785 proven. 1193 refuted. 0 times theorem prover too weak. 4681 trivial. 0 not checked. [2022-12-13 20:02:03,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422101121] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:03,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:02:03,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 40 [2022-12-13 20:02:03,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126584753] [2022-12-13 20:02:03,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:03,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 20:02:03,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:03,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 20:02:03,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1359, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 20:02:03,298 INFO L87 Difference]: Start difference. First operand 388 states and 417 transitions. Second operand has 40 states, 39 states have (on average 5.615384615384615) internal successors, (219), 39 states have internal predecessors, (219), 25 states have call successors, (38), 2 states have call predecessors, (38), 16 states have return successors, (44), 26 states have call predecessors, (44), 24 states have call successors, (44) [2022-12-13 20:02:03,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:02:03,933 INFO L93 Difference]: Finished difference Result 521 states and 570 transitions. [2022-12-13 20:02:03,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 20:02:03,934 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 5.615384615384615) internal successors, (219), 39 states have internal predecessors, (219), 25 states have call successors, (38), 2 states have call predecessors, (38), 16 states have return successors, (44), 26 states have call predecessors, (44), 24 states have call successors, (44) Word has length 614 [2022-12-13 20:02:03,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:02:03,936 INFO L225 Difference]: With dead ends: 521 [2022-12-13 20:02:03,937 INFO L226 Difference]: Without dead ends: 423 [2022-12-13 20:02:03,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1387 GetRequests, 1321 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=467, Invalid=2839, Unknown=0, NotChecked=0, Total=3306 [2022-12-13 20:02:03,938 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 186 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:02:03,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 671 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:02:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-12-13 20:02:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 401. [2022-12-13 20:02:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 321 states have (on average 1.0155763239875388) internal successors, (326), 317 states have internal predecessors, (326), 49 states have call successors, (49), 35 states have call predecessors, (49), 30 states have return successors, (57), 48 states have call predecessors, (57), 48 states have call successors, (57) [2022-12-13 20:02:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 432 transitions. [2022-12-13 20:02:03,950 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 432 transitions. Word has length 614 [2022-12-13 20:02:03,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:02:03,951 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 432 transitions. [2022-12-13 20:02:03,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 5.615384615384615) internal successors, (219), 39 states have internal predecessors, (219), 25 states have call successors, (38), 2 states have call predecessors, (38), 16 states have return successors, (44), 26 states have call predecessors, (44), 24 states have call successors, (44) [2022-12-13 20:02:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 432 transitions. [2022-12-13 20:02:03,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2022-12-13 20:02:03,954 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:02:03,954 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 33, 32, 27, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1] [2022-12-13 20:02:03,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-13 20:02:04,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:04,155 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-13 20:02:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:02:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash -925619143, now seen corresponding path program 6 times [2022-12-13 20:02:04,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:02:04,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731844831] [2022-12-13 20:02:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:02:04,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:02:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:06,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:02:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:06,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:02:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:02:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 20:02:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:02:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-12-13 20:02:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:02:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:02:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-12-13 20:02:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:02:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 20:02:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 20:02:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:07,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:08,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:08,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:08,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 20:02:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 20:02:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 20:02:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 20:02:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:02:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1237 proven. 1440 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2022-12-13 20:02:08,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:02:08,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731844831] [2022-12-13 20:02:08,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731844831] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:02:08,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442167335] [2022-12-13 20:02:08,029 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 20:02:08,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:02:08,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:02:08,030 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:02:08,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 20:02:08,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2022-12-13 20:02:08,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:02:08,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 133 conjunts are in the unsatisfiable core [2022-12-13 20:02:08,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:02:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1237 proven. 1440 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2022-12-13 20:02:08,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:02:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 1543 proven. 1316 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2022-12-13 20:02:20,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442167335] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:02:20,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:02:20,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 46] total 69 [2022-12-13 20:02:20,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413538855] [2022-12-13 20:02:20,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:02:20,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-12-13 20:02:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:02:20,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-12-13 20:02:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=4261, Unknown=0, NotChecked=0, Total=4830 [2022-12-13 20:02:20,201 INFO L87 Difference]: Start difference. First operand 401 states and 432 transitions. Second operand has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 70 states have internal predecessors, (181), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) [2022-12-13 20:02:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:02:20,378 INFO L93 Difference]: Finished difference Result 420 states and 452 transitions. [2022-12-13 20:02:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 20:02:20,379 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 70 states have internal predecessors, (181), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) Word has length 653 [2022-12-13 20:02:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:02:20,379 INFO L225 Difference]: With dead ends: 420 [2022-12-13 20:02:20,379 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 20:02:20,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1573 GetRequests, 1390 SyntacticMatches, 111 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8904 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=643, Invalid=4759, Unknown=0, NotChecked=0, Total=5402 [2022-12-13 20:02:20,382 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:02:20,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 849 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:02:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 20:02:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 20:02:20,382 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) [2022-12-13 20:02:20,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 20:02:20,383 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 653 [2022-12-13 20:02:20,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:02:20,383 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 20:02:20,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.6231884057971016) internal successors, (181), 70 states have internal predecessors, (181), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) [2022-12-13 20:02:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 20:02:20,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 20:02:20,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-12-13 20:02:20,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-12-13 20:02:20,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-12-13 20:02:20,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-12-13 20:02:20,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-12-13 20:02:20,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-12-13 20:02:20,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-12-13 20:02:20,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-12-13 20:02:20,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-12-13 20:02:20,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-12-13 20:02:20,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-12-13 20:02:20,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-12-13 20:02:20,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 20:02:20,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 20:02:20,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 20:02:27,215 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 20:02:27,215 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 20:02:27,215 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 20:02:27,215 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 20:02:27,215 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-12-13 20:02:27,216 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 37 44) the Hoare annotation is: true [2022-12-13 20:02:27,216 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2022-12-13 20:02:27,216 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= 8 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 8)) [2022-12-13 20:02:27,216 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-12-13 20:02:27,216 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-12-13 20:02:27,216 INFO L899 garLoopResultBuilder]: For program point fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,216 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,216 INFO L899 garLoopResultBuilder]: For program point fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,216 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,216 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (and (not (<= |fibo2_#in~n| 1)) (or (not (<= |fibo2_#in~n| 7)) (= fibo2_~n |fibo2_#in~n|))) [2022-12-13 20:02:27,216 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,216 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,216 INFO L899 garLoopResultBuilder]: For program point L25-5(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L895 garLoopResultBuilder]: At program point L25-6(line 25) the Hoare annotation is: (let ((.cse4 (<= 5 |fibo2_#in~n|)) (.cse0 (= fibo2_~n |fibo2_#in~n|)) (.cse1 (<= |fibo2_#t~ret6| 2147483647)) (.cse3 (<= 1 |fibo2_#t~ret6|))) (and (let ((.cse2 (<= 5 fibo2_~n))) (or (and (<= |fibo2_#t~ret6| 5) .cse0 .cse1 .cse2 .cse3 (<= 6 fibo2_~n)) (not (<= |fibo2_#in~n| 7)) (and (<= |fibo2_#t~ret6| 8) .cse0 .cse1 .cse2 .cse3 (<= 7 |fibo2_#in~n|)) (not .cse4) (and (<= |fibo2_#t~ret6| 3) .cse0 .cse1 .cse2 .cse3))) (not (<= |fibo2_#in~n| 1)) (or .cse4 (and .cse0 .cse1 (<= |fibo2_#t~ret6| 1) .cse3) (and .cse0 .cse1 (<= 4 fibo2_~n) (<= |fibo2_#t~ret6| 2) .cse3)))) [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point L25-7(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point L25-8(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point L25-9(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 27) the Hoare annotation is: true [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,217 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (or (not (<= |fibo1_#in~n| 8)) (not (<= 8 |fibo1_#in~n|)) .cse0) (or .cse0 (not (<= |fibo1_#in~n| 6))) (not (<= |fibo1_#in~n| 1)))) [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 17) the Hoare annotation is: true [2022-12-13 20:02:27,218 INFO L895 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse0 (not (<= |fibo1_#in~n| 4))) (.cse3 (= fibo1_~n |fibo1_#in~n|)) (.cse1 (<= 2 |fibo1_#t~ret4|)) (.cse2 (not (<= |fibo1_#in~n| 6)))) (and (or .cse0 (and (= |fibo1_#t~ret4| 1) (<= fibo1_~n 3)) (and (<= 4 fibo1_~n) .cse1 (<= |fibo1_#t~ret4| 2))) (or .cse0 (< 1 fibo1_~n)) (or .cse2 (and (<= |fibo1_#t~ret4| 5) .cse3 (<= 6 fibo1_~n)) (and (<= |fibo1_#t~ret4| 3) .cse3)) (or (not (<= |fibo1_#in~n| 8)) (not (<= 8 |fibo1_#in~n|)) (and .cse1 .cse3 (<= |fibo1_#t~ret4| 13))) (or .cse1 (not (<= 5 |fibo1_#in~n|)) .cse2))) [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2022-12-13 20:02:27,218 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2022-12-13 20:02:27,221 INFO L445 BasicCegarLoop]: Path program histogram: [7, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:02:27,222 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:02:27,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:02:27 BoogieIcfgContainer [2022-12-13 20:02:27,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:02:27,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:02:27,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:02:27,228 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:02:27,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:01:19" (3/4) ... [2022-12-13 20:02:27,231 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 20:02:27,236 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2022-12-13 20:02:27,236 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2022-12-13 20:02:27,240 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-12-13 20:02:27,240 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 20:02:27,241 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 20:02:27,241 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 20:02:27,263 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:02:27,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:02:27,263 INFO L158 Benchmark]: Toolchain (without parser) took 68193.14ms. Allocated memory was 140.5MB in the beginning and 520.1MB in the end (delta: 379.6MB). Free memory was 83.8MB in the beginning and 334.9MB in the end (delta: -251.0MB). Peak memory consumption was 131.2MB. Max. memory is 16.1GB. [2022-12-13 20:02:27,263 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:02:27,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.71ms. Allocated memory is still 140.5MB. Free memory was 83.7MB in the beginning and 112.8MB in the end (delta: -29.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2022-12-13 20:02:27,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.25ms. Allocated memory is still 140.5MB. Free memory was 112.8MB in the beginning and 114.3MB in the end (delta: -1.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-12-13 20:02:27,263 INFO L158 Benchmark]: Boogie Preprocessor took 15.17ms. Allocated memory is still 140.5MB. Free memory was 114.3MB in the beginning and 113.7MB in the end (delta: 602.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:02:27,264 INFO L158 Benchmark]: RCFGBuilder took 240.49ms. Allocated memory is still 140.5MB. Free memory was 113.7MB in the beginning and 102.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 20:02:27,264 INFO L158 Benchmark]: TraceAbstraction took 67702.15ms. Allocated memory was 140.5MB in the beginning and 520.1MB in the end (delta: 379.6MB). Free memory was 101.7MB in the beginning and 338.0MB in the end (delta: -236.3MB). Peak memory consumption was 324.9MB. Max. memory is 16.1GB. [2022-12-13 20:02:27,264 INFO L158 Benchmark]: Witness Printer took 34.90ms. Allocated memory is still 520.1MB. Free memory was 337.0MB in the beginning and 334.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:02:27,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.71ms. Allocated memory is still 140.5MB. Free memory was 83.7MB in the beginning and 112.8MB in the end (delta: -29.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.25ms. Allocated memory is still 140.5MB. Free memory was 112.8MB in the beginning and 114.3MB in the end (delta: -1.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.17ms. Allocated memory is still 140.5MB. Free memory was 114.3MB in the beginning and 113.7MB in the end (delta: 602.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 240.49ms. Allocated memory is still 140.5MB. Free memory was 113.7MB in the beginning and 102.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 67702.15ms. Allocated memory was 140.5MB in the beginning and 520.1MB in the end (delta: 379.6MB). Free memory was 101.7MB in the beginning and 338.0MB in the end (delta: -236.3MB). Peak memory consumption was 324.9MB. Max. memory is 16.1GB. * Witness Printer took 34.90ms. Allocated memory is still 520.1MB. Free memory was 337.0MB in the beginning and 334.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: 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 3 procedures, 52 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 67.7s, OverallIterations: 38, TraceHistogramMax: 34, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4398 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4277 mSDsluCounter, 14032 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12373 mSDsCounter, 1955 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21010 IncrementalHoareTripleChecker+Invalid, 22965 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1955 mSolverCounterUnsat, 1659 mSDtfsCounter, 21010 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11472 GetRequests, 10024 SyntacticMatches, 366 SemanticMatches, 1082 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26914 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=937occurred in iteration=27, InterpolantAutomatonStates: 779, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 38 MinimizatonAttempts, 1771 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 2498 PreInvPairs, 3949 NumberOfFragments, 233 HoareAnnotationTreeSize, 2498 FomulaSimplifications, 109936 FormulaSimplificationTreeSizeReduction, 4.5s HoareSimplificationTime, 8 FomulaSimplificationsInter, 38127 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 40.2s InterpolantComputationTime, 10256 NumberOfCodeBlocks, 9727 NumberOfCodeBlocksAsserted, 132 NumberOfCheckSat, 14802 ConstructedInterpolants, 0 QuantifiedInterpolants, 28492 SizeOfPredicates, 95 NumberOfNonLiveVariables, 8645 ConjunctsInSsa, 577 ConjunctsInUnsatCore, 87 InterpolantComputations, 16 PerfectInterpolantSequences, 71486/84578 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 12 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-13 20:02:27,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c66dfef5-063e-47d3-b83a-3ac85edd62ae/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE