./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ --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 be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 --- 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-dbf71c6-m [2022-10-17 10:53:28,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:53:28,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:53:28,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:53:28,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:53:28,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:53:28,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:53:28,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:53:28,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:53:28,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:53:28,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:53:28,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:53:28,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:53:28,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:53:28,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:53:28,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:53:28,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:53:28,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:53:28,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:53:28,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:53:28,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:53:28,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:53:28,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:53:28,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:53:28,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:53:28,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:53:28,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:53:28,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:53:28,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:53:28,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:53:28,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:53:28,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:53:28,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:53:28,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:53:28,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:53:28,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:53:28,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:53:28,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:53:28,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:53:28,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:53:28,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:53:28,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-17 10:53:29,011 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:53:29,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:53:29,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:53:29,017 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:53:29,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:53:29,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:53:29,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:53:29,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:53:29,020 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:53:29,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:53:29,021 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:53:29,022 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:53:29,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:53:29,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:53:29,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:53:29,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:53:29,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:53:29,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:53:29,023 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 10:53:29,024 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:53:29,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:53:29,024 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:53:29,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:53:29,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:53:29,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:53:29,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:53:29,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:53:29,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:53:29,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:53:29,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:53:29,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:53:29,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:53:29,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:53:29,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 [2022-10-17 10:53:29,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:53:29,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:53:29,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:53:29,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:53:29,323 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:53:29,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/recursive/Fibonacci03.c [2022-10-17 10:53:29,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/data/03671145e/54c255638ca14821aff4747cc054db16/FLAGe1d1703a5 [2022-10-17 10:53:29,864 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:53:29,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/sv-benchmarks/c/recursive/Fibonacci03.c [2022-10-17 10:53:29,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/data/03671145e/54c255638ca14821aff4747cc054db16/FLAGe1d1703a5 [2022-10-17 10:53:30,242 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/data/03671145e/54c255638ca14821aff4747cc054db16 [2022-10-17 10:53:30,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:53:30,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:53:30,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:53:30,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:53:30,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:53:30,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5c5c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30, skipping insertion in model container [2022-10-17 10:53:30,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:53:30,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:53:30,540 WARN L230 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_b246c388-ac04-462f-b88b-7683e336e81a/sv-benchmarks/c/recursive/Fibonacci03.c[788,801] [2022-10-17 10:53:30,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:53:30,551 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:53:30,577 WARN L230 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_b246c388-ac04-462f-b88b-7683e336e81a/sv-benchmarks/c/recursive/Fibonacci03.c[788,801] [2022-10-17 10:53:30,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:53:30,594 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:53:30,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30 WrapperNode [2022-10-17 10:53:30,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:53:30,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:53:30,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:53:30,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:53:30,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,726 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2022-10-17 10:53:30,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:53:30,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:53:30,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:53:30,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:53:30,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:53:30,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:53:30,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:53:30,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:53:30,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (1/1) ... [2022-10-17 10:53:30,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:53:30,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:30,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:53:30,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:53:30,855 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2022-10-17 10:53:30,855 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2022-10-17 10:53:30,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:53:30,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:53:30,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:53:30,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:53:30,926 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:53:30,928 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:53:31,103 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:53:31,111 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:53:31,111 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:53:31,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:53:31 BoogieIcfgContainer [2022-10-17 10:53:31,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:53:31,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:53:31,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:53:31,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:53:31,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:53:30" (1/3) ... [2022-10-17 10:53:31,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8c0258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:53:31, skipping insertion in model container [2022-10-17 10:53:31,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:30" (2/3) ... [2022-10-17 10:53:31,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f8c0258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:53:31, skipping insertion in model container [2022-10-17 10:53:31,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:53:31" (3/3) ... [2022-10-17 10:53:31,124 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2022-10-17 10:53:31,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:53:31,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-17 10:53:31,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:53:31,220 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=FINITE_AUTOMATA, 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;@792e4f55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:53:31,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 10:53:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.5) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:53:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:53:31,255 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:31,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:31,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:31,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:31,263 INFO L85 PathProgramCache]: Analyzing trace with hash 627182713, now seen corresponding path program 1 times [2022-10-17 10:53:31,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:31,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109298699] [2022-10-17 10:53:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:31,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:53:31,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:31,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109298699] [2022-10-17 10:53:31,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109298699] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:31,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:31,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:53:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785547541] [2022-10-17 10:53:31,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:31,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:53:31,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:31,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:53:31,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:53:31,696 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.5) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.3333333333333335) 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) [2022-10-17 10:53:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:31,816 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-10-17 10:53:31,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:53:31,820 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 [2022-10-17 10:53:31,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:31,829 INFO L225 Difference]: With dead ends: 37 [2022-10-17 10:53:31,829 INFO L226 Difference]: Without dead ends: 23 [2022-10-17 10:53:31,832 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 [2022-10-17 10:53:31,837 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 38 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:31,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 47 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:53:31,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-17 10:53:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-17 10:53:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:53:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-10-17 10:53:31,884 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2022-10-17 10:53:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:31,884 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-10-17 10:53:31,885 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) [2022-10-17 10:53:31,885 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-10-17 10:53:31,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 10:53:31,887 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:31,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:31,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:53:31,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:31,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2032172335, now seen corresponding path program 1 times [2022-10-17 10:53:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:31,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288716295] [2022-10-17 10:53:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:31,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:53:31,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:31,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288716295] [2022-10-17 10:53:31,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288716295] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:31,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:31,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:53:31,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258960579] [2022-10-17 10:53:31,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:31,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:53:31,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:31,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:53:31,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:53:31,966 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-10-17 10:53:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:31,997 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-10-17 10:53:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:53:31,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2022-10-17 10:53:31,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:32,004 INFO L225 Difference]: With dead ends: 25 [2022-10-17 10:53:32,005 INFO L226 Difference]: Without dead ends: 23 [2022-10-17 10:53:32,006 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 [2022-10-17 10:53:32,008 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 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 [2022-10-17 10:53:32,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:53:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-17 10:53:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-10-17 10:53:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:53:32,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-10-17 10:53:32,034 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2022-10-17 10:53:32,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:32,035 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-10-17 10:53:32,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-10-17 10:53:32,036 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-10-17 10:53:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-17 10:53:32,037 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:32,038 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] [2022-10-17 10:53:32,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:53:32,039 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:32,043 INFO L85 PathProgramCache]: Analyzing trace with hash -60677199, now seen corresponding path program 1 times [2022-10-17 10:53:32,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:32,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869772778] [2022-10-17 10:53:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:32,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:53:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:53:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 10:53:32,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:32,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869772778] [2022-10-17 10:53:32,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869772778] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:32,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:32,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:53:32,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45190225] [2022-10-17 10:53:32,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:32,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:53:32,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:32,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:53:32,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:53:32,367 INFO L87 Difference]: Start difference. First operand 21 states and 24 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) [2022-10-17 10:53:32,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:32,478 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-10-17 10:53:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:53:32,480 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 24 [2022-10-17 10:53:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:32,488 INFO L225 Difference]: With dead ends: 37 [2022-10-17 10:53:32,488 INFO L226 Difference]: Without dead ends: 35 [2022-10-17 10:53:32,491 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 [2022-10-17 10:53:32,497 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:32,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 54 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:53:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-10-17 10:53:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2022-10-17 10:53:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-17 10:53:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-10-17 10:53:32,513 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2022-10-17 10:53:32,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:32,514 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-10-17 10:53:32,514 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) [2022-10-17 10:53:32,514 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-10-17 10:53:32,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-17 10:53:32,516 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:32,516 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:32,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:53:32,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:32,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:32,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2034782143, now seen corresponding path program 1 times [2022-10-17 10:53:32,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:32,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615896032] [2022-10-17 10:53:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:32,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:53:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:32,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 10:53:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:53:32,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:32,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615896032] [2022-10-17 10:53:32,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615896032] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:32,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024482909] [2022-10-17 10:53:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:32,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:32,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:32,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:32,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:53:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:32,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:53:32,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:53:33,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 10:53:33,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024482909] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:33,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:33,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-10-17 10:53:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868765357] [2022-10-17 10:53:33,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:33,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 10:53:33,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:53:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:53:33,280 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 10:53:33,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:33,772 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2022-10-17 10:53:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:53:33,773 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 31 [2022-10-17 10:53:33,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:33,779 INFO L225 Difference]: With dead ends: 91 [2022-10-17 10:53:33,779 INFO L226 Difference]: Without dead ends: 65 [2022-10-17 10:53:33,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2022-10-17 10:53:33,791 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 108 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:33,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 86 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:53:33,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-10-17 10:53:33,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2022-10-17 10:53:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2022-10-17 10:53:33,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2022-10-17 10:53:33,819 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 31 [2022-10-17 10:53:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:33,820 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2022-10-17 10:53:33,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 10:53:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2022-10-17 10:53:33,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-17 10:53:33,825 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:33,825 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] [2022-10-17 10:53:33,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:34,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-17 10:53:34,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:34,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:34,051 INFO L85 PathProgramCache]: Analyzing trace with hash -603092359, now seen corresponding path program 2 times [2022-10-17 10:53:34,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:34,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157521052] [2022-10-17 10:53:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:34,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:34,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:53:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:34,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:53:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:53:34,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:34,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157521052] [2022-10-17 10:53:34,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157521052] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:34,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376308444] [2022-10-17 10:53:34,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:53:34,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:34,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:34,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:34,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:53:34,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:53:34,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:34,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:53:34,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:53:34,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:53:34,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376308444] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:34,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:53:34,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-10-17 10:53:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128358497] [2022-10-17 10:53:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:34,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:53:34,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:53:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:53:34,329 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:53:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:34,372 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2022-10-17 10:53:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:53:34,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-10-17 10:53:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:34,376 INFO L225 Difference]: With dead ends: 61 [2022-10-17 10:53:34,376 INFO L226 Difference]: Without dead ends: 60 [2022-10-17 10:53:34,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:53:34,378 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:34,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:53:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-10-17 10:53:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2022-10-17 10:53:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 43 states have internal predecessors, (45), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2022-10-17 10:53:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-10-17 10:53:34,392 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2022-10-17 10:53:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:34,393 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-10-17 10:53:34,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:53:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-10-17 10:53:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 10:53:34,395 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:34,395 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] [2022-10-17 10:53:34,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:34,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:34,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:34,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1515993891, now seen corresponding path program 1 times [2022-10-17 10:53:34,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:34,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291918368] [2022-10-17 10:53:34,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:34,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:34,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:53:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:34,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:53:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:53:34,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:34,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291918368] [2022-10-17 10:53:34,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291918368] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:34,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063794236] [2022-10-17 10:53:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:34,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:34,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:34,795 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:34,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:53:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:34,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:53:34,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:53:34,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:53:35,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063794236] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:35,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:35,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-10-17 10:53:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979627468] [2022-10-17 10:53:35,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:35,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:53:35,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:35,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:53:35,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:53:35,014 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 10:53:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:35,126 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2022-10-17 10:53:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:53:35,127 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2022-10-17 10:53:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:35,133 INFO L225 Difference]: With dead ends: 70 [2022-10-17 10:53:35,133 INFO L226 Difference]: Without dead ends: 69 [2022-10-17 10:53:35,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:53:35,135 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:35,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 127 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:53:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-17 10:53:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2022-10-17 10:53:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 52 states have internal predecessors, (56), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (27), 12 states have call predecessors, (27), 7 states have call successors, (27) [2022-10-17 10:53:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2022-10-17 10:53:35,173 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 26 [2022-10-17 10:53:35,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:35,174 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2022-10-17 10:53:35,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 10:53:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2022-10-17 10:53:35,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 10:53:35,178 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:35,178 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:35,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:35,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:35,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:35,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:35,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1336761272, now seen corresponding path program 1 times [2022-10-17 10:53:35,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:35,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592248274] [2022-10-17 10:53:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:53:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:35,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:35,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-17 10:53:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-17 10:53:35,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:35,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592248274] [2022-10-17 10:53:35,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592248274] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:35,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585008812] [2022-10-17 10:53:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:35,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:35,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:35,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:35,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:53:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:35,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:53:35,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-17 10:53:35,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-17 10:53:35,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585008812] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:35,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:35,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2022-10-17 10:53:35,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380136027] [2022-10-17 10:53:35,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:35,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:53:35,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:53:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:53:35,987 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-17 10:53:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:36,213 INFO L93 Difference]: Finished difference Result 138 states and 205 transitions. [2022-10-17 10:53:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-17 10:53:36,213 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2022-10-17 10:53:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:36,223 INFO L225 Difference]: With dead ends: 138 [2022-10-17 10:53:36,223 INFO L226 Difference]: Without dead ends: 137 [2022-10-17 10:53:36,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:53:36,227 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:36,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 140 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:53:36,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-17 10:53:36,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 99. [2022-10-17 10:53:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.077922077922078) internal successors, (83), 76 states have internal predecessors, (83), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2022-10-17 10:53:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 160 transitions. [2022-10-17 10:53:36,280 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 160 transitions. Word has length 51 [2022-10-17 10:53:36,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:36,280 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 160 transitions. [2022-10-17 10:53:36,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-10-17 10:53:36,281 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 160 transitions. [2022-10-17 10:53:36,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-17 10:53:36,283 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:36,284 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:36,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:36,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 10:53:36,502 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:36,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:36,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1034679801, now seen corresponding path program 1 times [2022-10-17 10:53:36,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:36,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298720114] [2022-10-17 10:53:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:36,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:53:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:53:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:53:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-17 10:53:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-10-17 10:53:36,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:36,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298720114] [2022-10-17 10:53:36,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298720114] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:36,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:36,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:53:36,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047865702] [2022-10-17 10:53:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:36,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:53:36,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:53:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:53:36,645 INFO L87 Difference]: Start difference. First operand 99 states and 160 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:53:36,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:36,685 INFO L93 Difference]: Finished difference Result 112 states and 174 transitions. [2022-10-17 10:53:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:53:36,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 70 [2022-10-17 10:53:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:36,689 INFO L225 Difference]: With dead ends: 112 [2022-10-17 10:53:36,689 INFO L226 Difference]: Without dead ends: 111 [2022-10-17 10:53:36,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:53:36,691 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:36,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:53:36,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-17 10:53:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2022-10-17 10:53:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.077922077922078) internal successors, (83), 76 states have internal predecessors, (83), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2022-10-17 10:53:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 160 transitions. [2022-10-17 10:53:36,733 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 160 transitions. Word has length 70 [2022-10-17 10:53:36,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:36,733 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 160 transitions. [2022-10-17 10:53:36,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:53:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 160 transitions. [2022-10-17 10:53:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-17 10:53:36,737 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:36,737 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-17 10:53:36,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:53:36,738 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:36,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:36,738 INFO L85 PathProgramCache]: Analyzing trace with hash 53232581, now seen corresponding path program 2 times [2022-10-17 10:53:36,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:36,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276015930] [2022-10-17 10:53:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:36,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:53:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:53:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-10-17 10:53:36,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:36,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276015930] [2022-10-17 10:53:36,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276015930] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:36,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:36,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:53:36,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179346999] [2022-10-17 10:53:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:36,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:53:36,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:36,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:53:36,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:53:36,879 INFO L87 Difference]: Start difference. First operand 99 states and 160 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:53:36,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:36,910 INFO L93 Difference]: Finished difference Result 112 states and 174 transitions. [2022-10-17 10:53:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:53:36,911 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2022-10-17 10:53:36,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:36,913 INFO L225 Difference]: With dead ends: 112 [2022-10-17 10:53:36,913 INFO L226 Difference]: Without dead ends: 111 [2022-10-17 10:53:36,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:53:36,915 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:36,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 49 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:53:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-17 10:53:36,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2022-10-17 10:53:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 77 states have (on average 1.077922077922078) internal successors, (83), 76 states have internal predecessors, (83), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2022-10-17 10:53:36,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 160 transitions. [2022-10-17 10:53:36,933 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 160 transitions. Word has length 65 [2022-10-17 10:53:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:36,933 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 160 transitions. [2022-10-17 10:53:36,933 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, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:53:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 160 transitions. [2022-10-17 10:53:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 10:53:36,936 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:36,936 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 1, 1, 1, 1, 1] [2022-10-17 10:53:36,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:53:36,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:36,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:36,937 INFO L85 PathProgramCache]: Analyzing trace with hash 489976848, now seen corresponding path program 2 times [2022-10-17 10:53:36,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:36,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566113788] [2022-10-17 10:53:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:36,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:53:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-10-17 10:53:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 61 proven. 158 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-10-17 10:53:37,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:37,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566113788] [2022-10-17 10:53:37,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566113788] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:37,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456149292] [2022-10-17 10:53:37,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:53:37,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:37,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:37,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:37,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:53:37,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:53:37,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:37,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:53:37,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 68 proven. 206 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-10-17 10:53:37,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 68 proven. 209 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-10-17 10:53:37,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456149292] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:37,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:37,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 17 [2022-10-17 10:53:37,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616069848] [2022-10-17 10:53:37,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:37,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-17 10:53:37,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:37,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-17 10:53:37,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:53:37,951 INFO L87 Difference]: Start difference. First operand 99 states and 160 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 12 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 12 states have call successors, (16) [2022-10-17 10:53:38,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:38,085 INFO L93 Difference]: Finished difference Result 178 states and 303 transitions. [2022-10-17 10:53:38,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:53:38,085 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 12 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 12 states have call successors, (16) Word has length 123 [2022-10-17 10:53:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:38,087 INFO L225 Difference]: With dead ends: 178 [2022-10-17 10:53:38,087 INFO L226 Difference]: Without dead ends: 83 [2022-10-17 10:53:38,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 258 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:53:38,090 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 145 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:38,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 57 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:53:38,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-10-17 10:53:38,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2022-10-17 10:53:38,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 53 states have internal predecessors, (61), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (26), 12 states have call predecessors, (26), 6 states have call successors, (26) [2022-10-17 10:53:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2022-10-17 10:53:38,100 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 123 [2022-10-17 10:53:38,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:38,101 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2022-10-17 10:53:38,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 12 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (16), 8 states have call predecessors, (16), 12 states have call successors, (16) [2022-10-17 10:53:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2022-10-17 10:53:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-10-17 10:53:38,109 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:38,109 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 11, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 1, 1, 1, 1, 1] [2022-10-17 10:53:38,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:38,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 10:53:38,324 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:38,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:38,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1709494790, now seen corresponding path program 3 times [2022-10-17 10:53:38,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:38,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280368472] [2022-10-17 10:53:38,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:38,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:53:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 10:53:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 55 proven. 134 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-10-17 10:53:38,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:38,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280368472] [2022-10-17 10:53:38,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280368472] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:38,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709387146] [2022-10-17 10:53:38,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:53:38,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:38,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:38,594 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:38,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:53:38,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-17 10:53:38,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:38,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:53:38,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 200 proven. 21 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2022-10-17 10:53:38,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 200 proven. 22 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-10-17 10:53:39,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709387146] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:39,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:39,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 17 [2022-10-17 10:53:39,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544818557] [2022-10-17 10:53:39,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:39,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-17 10:53:39,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:39,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-17 10:53:39,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:53:39,108 INFO L87 Difference]: Start difference. First operand 70 states and 94 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 7 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2022-10-17 10:53:39,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:39,266 INFO L93 Difference]: Finished difference Result 125 states and 175 transitions. [2022-10-17 10:53:39,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:53:39,266 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 7 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) Word has length 129 [2022-10-17 10:53:39,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:39,268 INFO L225 Difference]: With dead ends: 125 [2022-10-17 10:53:39,268 INFO L226 Difference]: Without dead ends: 59 [2022-10-17 10:53:39,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 270 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:53:39,269 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 61 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:39,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 87 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:53:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-17 10:53:39,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-10-17 10:53:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 45 states have internal predecessors, (50), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-10-17 10:53:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2022-10-17 10:53:39,277 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 129 [2022-10-17 10:53:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:39,277 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2022-10-17 10:53:39,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 7 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2022-10-17 10:53:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2022-10-17 10:53:39,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-10-17 10:53:39,279 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:39,279 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 10, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2022-10-17 10:53:39,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:39,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:39,494 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:39,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:39,495 INFO L85 PathProgramCache]: Analyzing trace with hash -46810727, now seen corresponding path program 4 times [2022-10-17 10:53:39,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:39,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023371571] [2022-10-17 10:53:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:39,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:53:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-17 10:53:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 104 proven. 129 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-10-17 10:53:39,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:39,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023371571] [2022-10-17 10:53:39,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023371571] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:39,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27088074] [2022-10-17 10:53:39,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 10:53:39,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:39,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:39,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:39,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:53:39,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 10:53:39,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:39,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:53:39,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 102 proven. 158 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-10-17 10:53:40,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 102 proven. 174 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-10-17 10:53:40,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27088074] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:40,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:40,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 23 [2022-10-17 10:53:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140032931] [2022-10-17 10:53:40,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:40,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-17 10:53:40,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-17 10:53:40,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2022-10-17 10:53:40,703 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 17 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 17 states have call successors, (22) [2022-10-17 10:53:40,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:40,950 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2022-10-17 10:53:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:53:40,950 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 17 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 17 states have call successors, (22) Word has length 110 [2022-10-17 10:53:40,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:40,951 INFO L225 Difference]: With dead ends: 128 [2022-10-17 10:53:40,951 INFO L226 Difference]: Without dead ends: 75 [2022-10-17 10:53:40,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 226 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=274, Invalid=656, Unknown=0, NotChecked=0, Total=930 [2022-10-17 10:53:40,953 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 169 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:40,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 106 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:53:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-10-17 10:53:40,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2022-10-17 10:53:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 50 states have internal predecessors, (55), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-10-17 10:53:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2022-10-17 10:53:40,959 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 110 [2022-10-17 10:53:40,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:40,960 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2022-10-17 10:53:40,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 17 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (22), 10 states have call predecessors, (22), 17 states have call successors, (22) [2022-10-17 10:53:40,960 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2022-10-17 10:53:40,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-17 10:53:40,961 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:40,962 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2022-10-17 10:53:40,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:41,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-17 10:53:41,186 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:41,187 INFO L85 PathProgramCache]: Analyzing trace with hash 184548158, now seen corresponding path program 3 times [2022-10-17 10:53:41,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:41,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987166086] [2022-10-17 10:53:41,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:41,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:53:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:41,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:41,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-17 10:53:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-10-17 10:53:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987166086] [2022-10-17 10:53:41,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987166086] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773780993] [2022-10-17 10:53:41,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:53:41,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:41,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:41,491 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:41,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:53:41,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-17 10:53:41,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:41,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:53:41,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-10-17 10:53:41,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-10-17 10:53:41,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773780993] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:41,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:41,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2022-10-17 10:53:41,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131830315] [2022-10-17 10:53:41,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:41,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 10:53:41,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:53:41,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:53:41,844 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 15 states have internal predecessors, (52), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-17 10:53:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:41,949 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-10-17 10:53:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:53:41,949 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 15 states have internal predecessors, (52), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) Word has length 85 [2022-10-17 10:53:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:41,951 INFO L225 Difference]: With dead ends: 65 [2022-10-17 10:53:41,951 INFO L226 Difference]: Without dead ends: 64 [2022-10-17 10:53:41,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:53:41,952 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:41,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 148 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:53:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-17 10:53:41,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-10-17 10:53:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 49 states have internal predecessors, (54), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2022-10-17 10:53:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2022-10-17 10:53:41,960 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 85 [2022-10-17 10:53:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:41,960 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2022-10-17 10:53:41,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 15 states have internal predecessors, (52), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-17 10:53:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2022-10-17 10:53:41,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-10-17 10:53:41,964 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:41,964 INFO L195 NwaCegarLoop]: trace histogram [25, 23, 20, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 8, 5, 1, 1, 1, 1, 1] [2022-10-17 10:53:42,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:42,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-17 10:53:42,190 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:42,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:42,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2121603280, now seen corresponding path program 5 times [2022-10-17 10:53:42,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:42,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273969578] [2022-10-17 10:53:42,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:42,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:53:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:53:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-10-17 10:53:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1913 backedges. 245 proven. 631 refuted. 0 times theorem prover too weak. 1037 trivial. 0 not checked. [2022-10-17 10:53:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:42,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273969578] [2022-10-17 10:53:42,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273969578] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:42,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645664655] [2022-10-17 10:53:42,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-17 10:53:42,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:42,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:42,865 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:42,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:53:42,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-10-17 10:53:42,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:42,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-17 10:53:42,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1913 backedges. 1033 proven. 361 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-10-17 10:53:43,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1913 backedges. 413 proven. 655 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-10-17 10:53:44,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645664655] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:44,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:44,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 19] total 31 [2022-10-17 10:53:44,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582589908] [2022-10-17 10:53:44,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:44,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-10-17 10:53:44,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:44,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-10-17 10:53:44,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2022-10-17 10:53:44,436 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 31 states, 31 states have (on average 5.290322580645161) internal successors, (164), 31 states have internal predecessors, (164), 21 states have call successors, (30), 4 states have call predecessors, (30), 12 states have return successors, (35), 19 states have call predecessors, (35), 19 states have call successors, (35) [2022-10-17 10:53:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:45,044 INFO L93 Difference]: Finished difference Result 172 states and 214 transitions. [2022-10-17 10:53:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-17 10:53:45,045 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.290322580645161) internal successors, (164), 31 states have internal predecessors, (164), 21 states have call successors, (30), 4 states have call predecessors, (30), 12 states have return successors, (35), 19 states have call predecessors, (35), 19 states have call successors, (35) Word has length 236 [2022-10-17 10:53:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:45,047 INFO L225 Difference]: With dead ends: 172 [2022-10-17 10:53:45,047 INFO L226 Difference]: Without dead ends: 114 [2022-10-17 10:53:45,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 499 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=588, Invalid=1764, Unknown=0, NotChecked=0, Total=2352 [2022-10-17 10:53:45,050 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 347 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:45,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 167 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:53:45,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-10-17 10:53:45,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2022-10-17 10:53:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 77 states have internal predecessors, (88), 11 states have call successors, (11), 10 states have call predecessors, (11), 7 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2022-10-17 10:53:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2022-10-17 10:53:45,062 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 236 [2022-10-17 10:53:45,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:45,062 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2022-10-17 10:53:45,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.290322580645161) internal successors, (164), 31 states have internal predecessors, (164), 21 states have call successors, (30), 4 states have call predecessors, (30), 12 states have return successors, (35), 19 states have call predecessors, (35), 19 states have call successors, (35) [2022-10-17 10:53:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2022-10-17 10:53:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-10-17 10:53:45,064 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:45,065 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 11, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 1, 1, 1, 1, 1] [2022-10-17 10:53:45,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:45,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 10:53:45,265 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:45,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash 472435048, now seen corresponding path program 6 times [2022-10-17 10:53:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:45,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684065317] [2022-10-17 10:53:45,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:45,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:53:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-17 10:53:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 214 proven. 68 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-10-17 10:53:45,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:45,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684065317] [2022-10-17 10:53:45,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684065317] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:45,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736651185] [2022-10-17 10:53:45,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-17 10:53:45,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:45,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:45,738 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:45,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 10:53:45,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-10-17 10:53:45,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:45,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-17 10:53:45,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 61 proven. 90 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-10-17 10:53:46,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 103 proven. 90 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-10-17 10:53:47,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736651185] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:47,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:47,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 33 [2022-10-17 10:53:47,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753578469] [2022-10-17 10:53:47,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:47,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-17 10:53:47,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:47,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-17 10:53:47,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2022-10-17 10:53:47,285 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 11 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (25), 24 states have call predecessors, (25), 11 states have call successors, (25) [2022-10-17 10:53:48,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:48,009 INFO L93 Difference]: Finished difference Result 220 states and 284 transitions. [2022-10-17 10:53:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-10-17 10:53:48,009 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 11 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (25), 24 states have call predecessors, (25), 11 states have call successors, (25) Word has length 129 [2022-10-17 10:53:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:48,011 INFO L225 Difference]: With dead ends: 220 [2022-10-17 10:53:48,011 INFO L226 Difference]: Without dead ends: 126 [2022-10-17 10:53:48,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 251 SyntacticMatches, 10 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=491, Invalid=2589, Unknown=0, NotChecked=0, Total=3080 [2022-10-17 10:53:48,015 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 174 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:48,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 119 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:53:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-10-17 10:53:48,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 111. [2022-10-17 10:53:48,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 85 states have internal predecessors, (96), 12 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (25), 15 states have call predecessors, (25), 11 states have call successors, (25) [2022-10-17 10:53:48,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 133 transitions. [2022-10-17 10:53:48,031 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 133 transitions. Word has length 129 [2022-10-17 10:53:48,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:48,032 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 133 transitions. [2022-10-17 10:53:48,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.242424242424242) internal successors, (107), 33 states have internal predecessors, (107), 11 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (25), 24 states have call predecessors, (25), 11 states have call successors, (25) [2022-10-17 10:53:48,033 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 133 transitions. [2022-10-17 10:53:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-10-17 10:53:48,037 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:48,038 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 22, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 9, 5, 1, 1, 1, 1, 1] [2022-10-17 10:53:48,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:48,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-17 10:53:48,258 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1528465895, now seen corresponding path program 7 times [2022-10-17 10:53:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:48,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867314577] [2022-10-17 10:53:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:53:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:53:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-17 10:53:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-10-17 10:53:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:49,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:49,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2351 backedges. 750 proven. 379 refuted. 0 times theorem prover too weak. 1222 trivial. 0 not checked. [2022-10-17 10:53:49,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867314577] [2022-10-17 10:53:49,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867314577] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808456805] [2022-10-17 10:53:49,109 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 10:53:49,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:49,115 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:49,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-17 10:53:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:49,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-17 10:53:49,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2351 backedges. 1188 proven. 484 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2022-10-17 10:53:49,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2351 backedges. 500 proven. 831 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2022-10-17 10:53:50,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808456805] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:50,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:50,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 27 [2022-10-17 10:53:50,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564769287] [2022-10-17 10:53:50,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:50,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-17 10:53:50,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:50,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-17 10:53:50,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2022-10-17 10:53:50,939 INFO L87 Difference]: Start difference. First operand 111 states and 133 transitions. Second operand has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 23 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (38), 16 states have call predecessors, (38), 23 states have call successors, (38) [2022-10-17 10:53:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:51,300 INFO L93 Difference]: Finished difference Result 220 states and 281 transitions. [2022-10-17 10:53:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-17 10:53:51,300 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 23 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (38), 16 states have call predecessors, (38), 23 states have call successors, (38) Word has length 261 [2022-10-17 10:53:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:51,303 INFO L225 Difference]: With dead ends: 220 [2022-10-17 10:53:51,303 INFO L226 Difference]: Without dead ends: 115 [2022-10-17 10:53:51,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 554 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=858, Unknown=0, NotChecked=0, Total=1190 [2022-10-17 10:53:51,305 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 249 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:51,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 173 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:53:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-17 10:53:51,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2022-10-17 10:53:51,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.035294117647059) internal successors, (88), 83 states have internal predecessors, (88), 13 states have call successors, (13), 10 states have call predecessors, (13), 7 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2022-10-17 10:53:51,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2022-10-17 10:53:51,315 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 261 [2022-10-17 10:53:51,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:51,316 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2022-10-17 10:53:51,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 23 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (38), 16 states have call predecessors, (38), 23 states have call successors, (38) [2022-10-17 10:53:51,317 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2022-10-17 10:53:51,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2022-10-17 10:53:51,328 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:51,329 INFO L195 NwaCegarLoop]: trace histogram [62, 59, 50, 31, 31, 31, 31, 30, 30, 30, 30, 30, 29, 29, 28, 28, 19, 12, 1, 1, 1, 1, 1] [2022-10-17 10:53:51,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:51,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:51,542 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:51,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash -475831538, now seen corresponding path program 8 times [2022-10-17 10:53:51,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:51,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613761816] [2022-10-17 10:53:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:51,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:53:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:53:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-17 10:53:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:52,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-10-17 10:53:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:53:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-17 10:53:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2022-10-17 10:53:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12754 backedges. 1435 proven. 3129 refuted. 0 times theorem prover too weak. 8190 trivial. 0 not checked. [2022-10-17 10:53:53,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:53,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613761816] [2022-10-17 10:53:53,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613761816] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:53,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803137333] [2022-10-17 10:53:53,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:53:53,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:53,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:53,531 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:53,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-17 10:53:53,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:53:53,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:53,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-17 10:53:53,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12754 backedges. 4589 proven. 2732 refuted. 0 times theorem prover too weak. 5433 trivial. 0 not checked. [2022-10-17 10:53:54,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 12754 backedges. 1430 proven. 3669 refuted. 0 times theorem prover too weak. 7655 trivial. 0 not checked. [2022-10-17 10:53:56,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803137333] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:56,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:53:56,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 26] total 37 [2022-10-17 10:53:56,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949366344] [2022-10-17 10:53:56,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:56,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-10-17 10:53:56,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-10-17 10:53:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2022-10-17 10:53:56,461 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 37 states, 37 states have (on average 5.756756756756757) internal successors, (213), 37 states have internal predecessors, (213), 34 states have call successors, (41), 3 states have call predecessors, (41), 13 states have return successors, (54), 22 states have call predecessors, (54), 33 states have call successors, (54) [2022-10-17 10:53:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:57,101 INFO L93 Difference]: Finished difference Result 258 states and 336 transitions. [2022-10-17 10:53:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-17 10:53:57,102 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.756756756756757) internal successors, (213), 37 states have internal predecessors, (213), 34 states have call successors, (41), 3 states have call predecessors, (41), 13 states have return successors, (54), 22 states have call predecessors, (54), 33 states have call successors, (54) Word has length 595 [2022-10-17 10:53:57,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:57,105 INFO L225 Difference]: With dead ends: 258 [2022-10-17 10:53:57,105 INFO L226 Difference]: Without dead ends: 158 [2022-10-17 10:53:57,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1355 GetRequests, 1282 SyntacticMatches, 14 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=945, Invalid=2715, Unknown=0, NotChecked=0, Total=3660 [2022-10-17 10:53:57,108 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 476 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:57,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 172 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:53:57,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-10-17 10:53:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 136. [2022-10-17 10:53:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 107 states have internal predecessors, (115), 17 states have call successors, (17), 14 states have call predecessors, (17), 8 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2022-10-17 10:53:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 170 transitions. [2022-10-17 10:53:57,121 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 170 transitions. Word has length 595 [2022-10-17 10:53:57,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:57,122 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 170 transitions. [2022-10-17 10:53:57,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.756756756756757) internal successors, (213), 37 states have internal predecessors, (213), 34 states have call successors, (41), 3 states have call predecessors, (41), 13 states have return successors, (54), 22 states have call predecessors, (54), 33 states have call successors, (54) [2022-10-17 10:53:57,122 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 170 transitions. [2022-10-17 10:53:57,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-10-17 10:53:57,129 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:57,129 INFO L195 NwaCegarLoop]: trace histogram [36, 34, 29, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 11, 7, 1, 1, 1, 1, 1] [2022-10-17 10:53:57,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:57,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-17 10:53:57,355 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 10:53:57,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash 544597391, now seen corresponding path program 9 times [2022-10-17 10:53:57,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:57,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156827540] [2022-10-17 10:53:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:57,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:57,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:53:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:57,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-17 10:53:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-17 10:53:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-10-17 10:53:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:53:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-17 10:53:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:53:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4183 backedges. 988 proven. 816 refuted. 0 times theorem prover too weak. 2379 trivial. 0 not checked. [2022-10-17 10:53:58,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:58,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156827540] [2022-10-17 10:53:58,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156827540] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:53:58,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476366067] [2022-10-17 10:53:58,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:53:58,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:58,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:58,458 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:58,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b246c388-ac04-462f-b88b-7683e336e81a/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-17 10:53:58,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-10-17 10:53:58,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:53:58,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:53:58,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4183 backedges. 1125 proven. 412 refuted. 0 times theorem prover too weak. 2646 trivial. 0 not checked. [2022-10-17 10:53:58,777 INFO L328 TraceCheckSpWp]: Computing backward predicates...