./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:33:08,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:33:08,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:33:08,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:33:08,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:33:08,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:33:08,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:33:08,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:33:08,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:33:08,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:33:08,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:33:08,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:33:08,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:33:08,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:33:08,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:33:08,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:33:08,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:33:08,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:33:08,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:33:08,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:33:08,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:33:08,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:33:08,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:33:08,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:33:08,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:33:08,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:33:08,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:33:08,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:33:08,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:33:08,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:33:08,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:33:08,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:33:08,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:33:08,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:33:08,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:33:08,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:33:08,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:33:08,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:33:08,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:33:08,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:33:08,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:33:08,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:33:08,271 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:33:08,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:33:08,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:33:08,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:33:08,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:33:08,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:33:08,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:33:08,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:33:08,275 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:33:08,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:33:08,277 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:33:08,277 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:33:08,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:33:08,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:33:08,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:33:08,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:33:08,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:33:08,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:33:08,279 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:33:08,279 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:33:08,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:33:08,280 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:33:08,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:33:08,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:33:08,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:33:08,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:33:08,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:08,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:33:08,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:33:08,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:33:08,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:33:08,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:33:08,284 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:33:08,284 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:33:08,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:33:08,285 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_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2022-11-20 10:33:08,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:33:08,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:33:08,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:33:08,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:33:08,648 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:33:08,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2022-11-20 10:33:11,633 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:33:11,904 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:33:11,905 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2022-11-20 10:33:11,911 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/data/5c1a3ffe0/cc0d2aaf842c423f9326c73a567e5c6c/FLAG932d563e1 [2022-11-20 10:33:11,926 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/data/5c1a3ffe0/cc0d2aaf842c423f9326c73a567e5c6c [2022-11-20 10:33:11,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:33:11,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:33:11,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:11,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:33:11,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:33:11,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:11" (1/1) ... [2022-11-20 10:33:11,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a0fc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:11, skipping insertion in model container [2022-11-20 10:33:11,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:11" (1/1) ... [2022-11-20 10:33:11,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:33:11,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:33:12,109 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2022-11-20 10:33:12,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:12,125 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:33:12,150 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2022-11-20 10:33:12,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:33:12,163 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:33:12,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12 WrapperNode [2022-11-20 10:33:12,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:33:12,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:12,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:33:12,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:33:12,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,195 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-20 10:33:12,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:33:12,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:33:12,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:33:12,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:33:12,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,229 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:33:12,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:33:12,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:33:12,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:33:12,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (1/1) ... [2022-11-20 10:33:12,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:33:12,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:12,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:33:12,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:33:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:33:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:33:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-20 10:33:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-20 10:33:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-20 10:33:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-20 10:33:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:33:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:33:12,408 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:33:12,410 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:33:12,655 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:33:12,662 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:33:12,662 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:33:12,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:12 BoogieIcfgContainer [2022-11-20 10:33:12,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:33:12,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:33:12,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:33:12,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:33:12,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:11" (1/3) ... [2022-11-20 10:33:12,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506c921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:12, skipping insertion in model container [2022-11-20 10:33:12,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:12" (2/3) ... [2022-11-20 10:33:12,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506c921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:12, skipping insertion in model container [2022-11-20 10:33:12,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:12" (3/3) ... [2022-11-20 10:33:12,690 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2022-11-20 10:33:12,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:33:12,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 10:33:12,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:33:12,769 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4de22552, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:33:12,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-20 10:33:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.53125) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 10:33:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 10:33:12,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:12,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:12,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:12,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1865119399, now seen corresponding path program 1 times [2022-11-20 10:33:12,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:12,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306121920] [2022-11-20 10:33:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:12,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:13,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:13,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306121920] [2022-11-20 10:33:13,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306121920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:13,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:13,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059980154] [2022-11-20 10:33:13,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:13,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:13,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:13,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:13,139 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.53125) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:13,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:13,317 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2022-11-20 10:33:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:33:13,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 10:33:13,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:13,328 INFO L225 Difference]: With dead ends: 79 [2022-11-20 10:33:13,329 INFO L226 Difference]: Without dead ends: 64 [2022-11-20 10:33:13,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:33:13,335 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 40 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:13,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 178 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:13,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-20 10:33:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-11-20 10:33:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 48 states have internal predecessors, (56), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 10:33:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-11-20 10:33:13,390 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 7 [2022-11-20 10:33:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:13,391 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-11-20 10:33:13,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-11-20 10:33:13,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:33:13,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:13,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:13,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:33:13,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1984126606, now seen corresponding path program 1 times [2022-11-20 10:33:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:13,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452335832] [2022-11-20 10:33:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:13,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:13,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:13,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452335832] [2022-11-20 10:33:13,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452335832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:13,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:13,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:33:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630046099] [2022-11-20 10:33:13,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:13,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:33:13,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:13,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:33:13,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:13,471 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:13,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:13,497 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-11-20 10:33:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:13,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 10:33:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:13,499 INFO L225 Difference]: With dead ends: 60 [2022-11-20 10:33:13,500 INFO L226 Difference]: Without dead ends: 58 [2022-11-20 10:33:13,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:13,502 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:13,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 74 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-20 10:33:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-11-20 10:33:13,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 10:33:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-11-20 10:33:13,513 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2022-11-20 10:33:13,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:13,513 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-11-20 10:33:13,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-11-20 10:33:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:33:13,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:13,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:13,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:33:13,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:13,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1532318177, now seen corresponding path program 1 times [2022-11-20 10:33:13,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:13,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277085753] [2022-11-20 10:33:13,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:13,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:13,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:13,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277085753] [2022-11-20 10:33:13,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277085753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:13,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:13,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:33:13,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957020311] [2022-11-20 10:33:13,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:13,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:33:13,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:13,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:33:13,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:33:13,641 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:13,765 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-11-20 10:33:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:13,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 10:33:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:13,767 INFO L225 Difference]: With dead ends: 56 [2022-11-20 10:33:13,768 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 10:33:13,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:33:13,770 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 60 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:13,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 72 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:13,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 10:33:13,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-20 10:33:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 42 states have internal predecessors, (48), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 10:33:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-11-20 10:33:13,785 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 13 [2022-11-20 10:33:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:13,790 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-11-20 10:33:13,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-11-20 10:33:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:33:13,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:13,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:13,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:33:13,792 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:13,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash 257223290, now seen corresponding path program 1 times [2022-11-20 10:33:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:13,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26576562] [2022-11-20 10:33:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:13,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:13,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:13,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26576562] [2022-11-20 10:33:13,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26576562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:13,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:13,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:33:13,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079073715] [2022-11-20 10:33:13,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:13,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:33:13,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:13,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:33:13,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:13,878 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:13,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:13,915 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2022-11-20 10:33:13,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:33:13,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 10:33:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:13,917 INFO L225 Difference]: With dead ends: 54 [2022-11-20 10:33:13,917 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 10:33:13,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:33:13,919 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:13,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 66 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:13,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 10:33:13,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2022-11-20 10:33:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 10:33:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-11-20 10:33:13,941 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2022-11-20 10:33:13,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:13,942 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-11-20 10:33:13,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-11-20 10:33:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 10:33:13,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:13,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:13,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:33:13,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:13,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash 802214107, now seen corresponding path program 1 times [2022-11-20 10:33:13,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:13,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850820351] [2022-11-20 10:33:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:13,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:14,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:33:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:33:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:33:14,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:14,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850820351] [2022-11-20 10:33:14,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850820351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:14,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:14,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:14,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494000610] [2022-11-20 10:33:14,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:14,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:14,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:14,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:14,142 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:14,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:14,184 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-11-20 10:33:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:14,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-20 10:33:14,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:14,187 INFO L225 Difference]: With dead ends: 76 [2022-11-20 10:33:14,189 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 10:33:14,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:14,192 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:14,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 10:33:14,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2022-11-20 10:33:14,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 10:33:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2022-11-20 10:33:14,213 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2022-11-20 10:33:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:14,213 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2022-11-20 10:33:14,214 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) [2022-11-20 10:33:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2022-11-20 10:33:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 10:33:14,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:14,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:14,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:33:14,216 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:14,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash -890218714, now seen corresponding path program 1 times [2022-11-20 10:33:14,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:14,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385573377] [2022-11-20 10:33:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:33:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:14,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:33:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:33:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:14,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385573377] [2022-11-20 10:33:14,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385573377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:14,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197418741] [2022-11-20 10:33:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:14,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:14,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:14,365 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:14,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:33:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:14,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:33:14,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:14,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:14,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197418741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:14,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:14,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 10:33:14,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695461883] [2022-11-20 10:33:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:14,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:33:14,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:33:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:33:14,570 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:14,697 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2022-11-20 10:33:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:14,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-11-20 10:33:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:14,699 INFO L225 Difference]: With dead ends: 111 [2022-11-20 10:33:14,699 INFO L226 Difference]: Without dead ends: 61 [2022-11-20 10:33:14,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:33:14,701 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:14,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 121 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:14,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-20 10:33:14,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-11-20 10:33:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 10:33:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-11-20 10:33:14,711 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2022-11-20 10:33:14,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:14,712 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-11-20 10:33:14,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-11-20 10:33:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 10:33:14,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:14,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:14,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:33:14,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:14,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:14,920 INFO L85 PathProgramCache]: Analyzing trace with hash 411319597, now seen corresponding path program 1 times [2022-11-20 10:33:14,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:14,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572085448] [2022-11-20 10:33:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:14,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:33:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 10:33:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:33:15,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:15,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572085448] [2022-11-20 10:33:15,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572085448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:15,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:15,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:15,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088878573] [2022-11-20 10:33:15,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:15,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:15,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:15,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:15,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:15,125 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:15,258 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-11-20 10:33:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-20 10:33:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:15,261 INFO L225 Difference]: With dead ends: 85 [2022-11-20 10:33:15,261 INFO L226 Difference]: Without dead ends: 80 [2022-11-20 10:33:15,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:15,262 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:15,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 150 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:15,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-20 10:33:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2022-11-20 10:33:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2022-11-20 10:33:15,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-11-20 10:33:15,279 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2022-11-20 10:33:15,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:15,279 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-11-20 10:33:15,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-11-20 10:33:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 10:33:15,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:15,281 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:15,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:33:15,282 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2120732165, now seen corresponding path program 1 times [2022-11-20 10:33:15,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:15,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97299392] [2022-11-20 10:33:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:15,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:33:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 10:33:15,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:15,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97299392] [2022-11-20 10:33:15,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97299392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:15,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:15,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:15,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708313195] [2022-11-20 10:33:15,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:15,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:15,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:15,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:15,398 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:15,455 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-11-20 10:33:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:15,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-11-20 10:33:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:15,457 INFO L225 Difference]: With dead ends: 85 [2022-11-20 10:33:15,457 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 10:33:15,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:15,458 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:15,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:15,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 10:33:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2022-11-20 10:33:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2022-11-20 10:33:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2022-11-20 10:33:15,469 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2022-11-20 10:33:15,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:15,483 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2022-11-20 10:33:15,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:15,483 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2022-11-20 10:33:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 10:33:15,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:15,485 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:15,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:33:15,485 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:15,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:15,486 INFO L85 PathProgramCache]: Analyzing trace with hash 900334698, now seen corresponding path program 1 times [2022-11-20 10:33:15,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:15,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184540423] [2022-11-20 10:33:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:15,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:33:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 10:33:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 10:33:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 10:33:15,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:15,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184540423] [2022-11-20 10:33:15,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184540423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:15,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860692021] [2022-11-20 10:33:15,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:15,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:15,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:15,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:15,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:33:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:15,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:33:15,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:33:15,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:15,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860692021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:15,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:15,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-20 10:33:15,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286182244] [2022-11-20 10:33:15,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:15,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:33:15,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:15,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:33:15,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:33:15,810 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:33:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:15,957 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2022-11-20 10:33:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:15,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-11-20 10:33:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:15,959 INFO L225 Difference]: With dead ends: 141 [2022-11-20 10:33:15,960 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 10:33:15,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:33:15,962 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:15,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 152 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 10:33:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-11-20 10:33:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-20 10:33:15,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-11-20 10:33:15,974 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 39 [2022-11-20 10:33:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:15,974 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-11-20 10:33:15,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:33:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-11-20 10:33:15,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 10:33:15,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:15,976 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:15,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 10:33:16,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 10:33:16,182 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:16,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:16,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1330050266, now seen corresponding path program 1 times [2022-11-20 10:33:16,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:16,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782405646] [2022-11-20 10:33:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:16,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:16,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 10:33:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:33:16,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:16,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782405646] [2022-11-20 10:33:16,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782405646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:16,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762389758] [2022-11-20 10:33:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:16,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:16,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:16,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:16,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:33:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:16,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:33:16,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:16,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:33:16,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762389758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:16,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:16,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-20 10:33:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201674817] [2022-11-20 10:33:16,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:16,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:33:16,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:16,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:33:16,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:33:16,732 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 10:33:17,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:17,310 INFO L93 Difference]: Finished difference Result 202 states and 267 transitions. [2022-11-20 10:33:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 10:33:17,311 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-11-20 10:33:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:17,312 INFO L225 Difference]: With dead ends: 202 [2022-11-20 10:33:17,313 INFO L226 Difference]: Without dead ends: 137 [2022-11-20 10:33:17,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:33:17,314 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 143 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:17,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 495 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:33:17,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-20 10:33:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2022-11-20 10:33:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2022-11-20 10:33:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2022-11-20 10:33:17,332 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30 [2022-11-20 10:33:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:17,333 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2022-11-20 10:33:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 10:33:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2022-11-20 10:33:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 10:33:17,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:17,334 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:17,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:17,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:33:17,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:17,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:17,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1193456114, now seen corresponding path program 2 times [2022-11-20 10:33:17,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:17,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917933658] [2022-11-20 10:33:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:17,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:33:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 10:33:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 10:33:17,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:17,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917933658] [2022-11-20 10:33:17,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917933658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:17,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163718580] [2022-11-20 10:33:17,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:33:17,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:17,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:17,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:17,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:33:17,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:33:17,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:17,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:33:17,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 10:33:17,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:17,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163718580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:17,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:17,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 10:33:17,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180594009] [2022-11-20 10:33:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:17,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:17,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:17,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:17,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:33:17,796 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:17,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:17,829 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2022-11-20 10:33:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:17,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-11-20 10:33:17,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:17,831 INFO L225 Difference]: With dead ends: 132 [2022-11-20 10:33:17,831 INFO L226 Difference]: Without dead ends: 131 [2022-11-20 10:33:17,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:33:17,832 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:17,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-20 10:33:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2022-11-20 10:33:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.15625) internal successors, (111), 99 states have internal predecessors, (111), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2022-11-20 10:33:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2022-11-20 10:33:17,848 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42 [2022-11-20 10:33:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:17,849 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2022-11-20 10:33:17,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2022-11-20 10:33:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 10:33:17,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:17,850 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:17,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:18,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:33:18,057 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:18,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:18,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1657566201, now seen corresponding path program 1 times [2022-11-20 10:33:18,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:18,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390419625] [2022-11-20 10:33:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:18,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:18,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:33:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 10:33:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 10:33:18,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:18,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390419625] [2022-11-20 10:33:18,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390419625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:18,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004254208] [2022-11-20 10:33:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:18,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:18,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:18,183 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:18,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:33:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:18,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:33:18,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:18,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:33:18,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004254208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:18,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:18,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 23 [2022-11-20 10:33:18,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362874525] [2022-11-20 10:33:18,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:18,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:33:18,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:18,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:33:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:33:18,669 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 10:33:19,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:19,330 INFO L93 Difference]: Finished difference Result 321 states and 421 transitions. [2022-11-20 10:33:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:33:19,331 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2022-11-20 10:33:19,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:19,332 INFO L225 Difference]: With dead ends: 321 [2022-11-20 10:33:19,332 INFO L226 Difference]: Without dead ends: 211 [2022-11-20 10:33:19,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2022-11-20 10:33:19,334 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 210 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:19,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 722 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:33:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-20 10:33:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 191. [2022-11-20 10:33:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 149 states have (on average 1.1543624161073827) internal successors, (172), 151 states have internal predecessors, (172), 25 states have call successors, (25), 10 states have call predecessors, (25), 13 states have return successors, (48), 29 states have call predecessors, (48), 24 states have call successors, (48) [2022-11-20 10:33:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 245 transitions. [2022-11-20 10:33:19,352 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 245 transitions. Word has length 43 [2022-11-20 10:33:19,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:19,353 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 245 transitions. [2022-11-20 10:33:19,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 17 states have internal predecessors, (72), 11 states have call successors, (15), 8 states have call predecessors, (15), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 10:33:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 245 transitions. [2022-11-20 10:33:19,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 10:33:19,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:19,355 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:19,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:19,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:19,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:19,561 INFO L85 PathProgramCache]: Analyzing trace with hash 767040008, now seen corresponding path program 1 times [2022-11-20 10:33:19,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:19,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244142263] [2022-11-20 10:33:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:19,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 10:33:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:33:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-20 10:33:19,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:19,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244142263] [2022-11-20 10:33:19,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244142263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:19,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247154788] [2022-11-20 10:33:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:19,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:19,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:19,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:19,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:33:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:19,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:33:19,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:20,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:33:20,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247154788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:20,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:20,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 19] total 24 [2022-11-20 10:33:20,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567661600] [2022-11-20 10:33:20,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:20,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:33:20,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:20,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:33:20,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:33:20,359 INFO L87 Difference]: Start difference. First operand 191 states and 245 transitions. Second operand has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-20 10:33:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:21,080 INFO L93 Difference]: Finished difference Result 408 states and 525 transitions. [2022-11-20 10:33:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:33:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 60 [2022-11-20 10:33:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:21,083 INFO L225 Difference]: With dead ends: 408 [2022-11-20 10:33:21,083 INFO L226 Difference]: Without dead ends: 238 [2022-11-20 10:33:21,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 16 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 10:33:21,085 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 245 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:21,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 763 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:33:21,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-20 10:33:21,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 213. [2022-11-20 10:33:21,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 167 states have (on average 1.1497005988023952) internal successors, (192), 168 states have internal predecessors, (192), 28 states have call successors, (28), 11 states have call predecessors, (28), 14 states have return successors, (54), 33 states have call predecessors, (54), 27 states have call successors, (54) [2022-11-20 10:33:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 274 transitions. [2022-11-20 10:33:21,108 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 274 transitions. Word has length 60 [2022-11-20 10:33:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:21,110 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 274 transitions. [2022-11-20 10:33:21,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 17 states have internal predecessors, (73), 11 states have call successors, (14), 9 states have call predecessors, (14), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-20 10:33:21,111 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 274 transitions. [2022-11-20 10:33:21,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 10:33:21,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:21,115 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:21,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:21,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 10:33:21,321 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:21,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:21,321 INFO L85 PathProgramCache]: Analyzing trace with hash 561795286, now seen corresponding path program 2 times [2022-11-20 10:33:21,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:21,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531213622] [2022-11-20 10:33:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:21,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 10:33:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-20 10:33:21,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:21,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531213622] [2022-11-20 10:33:21,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531213622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:21,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340602484] [2022-11-20 10:33:21,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:33:21,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:21,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:21,448 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:21,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:33:21,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:33:21,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:21,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:33:21,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-20 10:33:21,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:21,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340602484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:21,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:21,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 10:33:21,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135799357] [2022-11-20 10:33:21,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:21,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:21,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:21,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:21,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:33:21,562 INFO L87 Difference]: Start difference. First operand 213 states and 274 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:21,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:21,606 INFO L93 Difference]: Finished difference Result 224 states and 287 transitions. [2022-11-20 10:33:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:21,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2022-11-20 10:33:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:21,608 INFO L225 Difference]: With dead ends: 224 [2022-11-20 10:33:21,608 INFO L226 Difference]: Without dead ends: 223 [2022-11-20 10:33:21,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:33:21,609 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 9 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:21,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 109 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:21,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-20 10:33:21,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2022-11-20 10:33:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 171 states have (on average 1.1461988304093567) internal successors, (196), 170 states have internal predecessors, (196), 28 states have call successors, (28), 11 states have call predecessors, (28), 14 states have return successors, (54), 35 states have call predecessors, (54), 27 states have call successors, (54) [2022-11-20 10:33:21,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 278 transitions. [2022-11-20 10:33:21,630 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 278 transitions. Word has length 60 [2022-11-20 10:33:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:21,632 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 278 transitions. [2022-11-20 10:33:21,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 278 transitions. [2022-11-20 10:33:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 10:33:21,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:21,633 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:21,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:21,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:21,840 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:21,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash 235784779, now seen corresponding path program 1 times [2022-11-20 10:33:21,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:21,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793903082] [2022-11-20 10:33:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:21,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:21,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 10:33:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:21,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-20 10:33:21,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:21,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793903082] [2022-11-20 10:33:21,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793903082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:21,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515257704] [2022-11-20 10:33:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:21,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:21,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:21,962 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:21,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:33:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:22,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:33:22,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-20 10:33:22,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-20 10:33:22,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515257704] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:22,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:22,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-11-20 10:33:22,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527001448] [2022-11-20 10:33:22,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:22,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:33:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:33:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:33:22,128 INFO L87 Difference]: Start difference. First operand 217 states and 278 transitions. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 10:33:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:22,233 INFO L93 Difference]: Finished difference Result 238 states and 304 transitions. [2022-11-20 10:33:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:33:22,234 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 61 [2022-11-20 10:33:22,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:22,237 INFO L225 Difference]: With dead ends: 238 [2022-11-20 10:33:22,237 INFO L226 Difference]: Without dead ends: 237 [2022-11-20 10:33:22,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:33:22,240 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:22,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 269 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-20 10:33:22,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 217. [2022-11-20 10:33:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 172 states have (on average 1.1569767441860466) internal successors, (199), 169 states have internal predecessors, (199), 27 states have call successors, (27), 11 states have call predecessors, (27), 14 states have return successors, (51), 36 states have call predecessors, (51), 26 states have call successors, (51) [2022-11-20 10:33:22,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 277 transitions. [2022-11-20 10:33:22,264 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 277 transitions. Word has length 61 [2022-11-20 10:33:22,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:22,264 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 277 transitions. [2022-11-20 10:33:22,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 12 states have internal predecessors, (40), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 10:33:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 277 transitions. [2022-11-20 10:33:22,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 10:33:22,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:22,266 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:22,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:22,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 10:33:22,481 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:22,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:22,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1770853253, now seen corresponding path program 1 times [2022-11-20 10:33:22,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:22,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471794017] [2022-11-20 10:33:22,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:22,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:22,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:33:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:22,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:33:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-20 10:33:22,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:22,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471794017] [2022-11-20 10:33:22,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471794017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:22,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:22,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:22,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89759247] [2022-11-20 10:33:22,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:22,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:22,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:22,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:22,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:22,590 INFO L87 Difference]: Start difference. First operand 217 states and 277 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:22,636 INFO L93 Difference]: Finished difference Result 230 states and 290 transitions. [2022-11-20 10:33:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:22,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2022-11-20 10:33:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:22,641 INFO L225 Difference]: With dead ends: 230 [2022-11-20 10:33:22,641 INFO L226 Difference]: Without dead ends: 228 [2022-11-20 10:33:22,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:22,642 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 5 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:22,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 140 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-20 10:33:22,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 213. [2022-11-20 10:33:22,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 169 states have (on average 1.1597633136094674) internal successors, (196), 166 states have internal predecessors, (196), 26 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (48), 35 states have call predecessors, (48), 25 states have call successors, (48) [2022-11-20 10:33:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 270 transitions. [2022-11-20 10:33:22,658 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 270 transitions. Word has length 67 [2022-11-20 10:33:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:22,659 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 270 transitions. [2022-11-20 10:33:22,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:33:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 270 transitions. [2022-11-20 10:33:22,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 10:33:22,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:22,661 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:22,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:33:22,663 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1824486331, now seen corresponding path program 1 times [2022-11-20 10:33:22,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:22,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012791930] [2022-11-20 10:33:22,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:22,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 10:33:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:22,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:22,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:33:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 57 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:33:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:23,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012791930] [2022-11-20 10:33:23,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012791930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:23,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809738226] [2022-11-20 10:33:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:23,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:23,017 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:23,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:33:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:23,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:33:23,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:33:23,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:33:23,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809738226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:23,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:23,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 24 [2022-11-20 10:33:23,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532684906] [2022-11-20 10:33:23,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:23,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:33:23,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:23,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:33:23,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:33:23,511 INFO L87 Difference]: Start difference. First operand 213 states and 270 transitions. Second operand has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 11 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:33:24,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:24,339 INFO L93 Difference]: Finished difference Result 557 states and 751 transitions. [2022-11-20 10:33:24,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 10:33:24,340 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 11 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 80 [2022-11-20 10:33:24,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:24,344 INFO L225 Difference]: With dead ends: 557 [2022-11-20 10:33:24,344 INFO L226 Difference]: Without dead ends: 365 [2022-11-20 10:33:24,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 160 SyntacticMatches, 16 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=291, Invalid=1349, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 10:33:24,347 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 431 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:24,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 250 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:33:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-20 10:33:24,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 344. [2022-11-20 10:33:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 275 states have (on average 1.1527272727272728) internal successors, (317), 268 states have internal predecessors, (317), 42 states have call successors, (42), 18 states have call predecessors, (42), 23 states have return successors, (77), 57 states have call predecessors, (77), 41 states have call successors, (77) [2022-11-20 10:33:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 436 transitions. [2022-11-20 10:33:24,376 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 436 transitions. Word has length 80 [2022-11-20 10:33:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:24,377 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 436 transitions. [2022-11-20 10:33:24,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 11 states have call successors, (13), 8 states have call predecessors, (13), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 10:33:24,377 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 436 transitions. [2022-11-20 10:33:24,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 10:33:24,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:24,382 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:24,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:24,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 10:33:24,588 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash 562828101, now seen corresponding path program 1 times [2022-11-20 10:33:24,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:24,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684777015] [2022-11-20 10:33:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:24,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:24,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 10:33:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:24,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:24,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:33:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 10:33:24,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:24,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684777015] [2022-11-20 10:33:24,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684777015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:24,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:24,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:24,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386299005] [2022-11-20 10:33:24,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:24,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:24,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:24,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:24,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:24,676 INFO L87 Difference]: Start difference. First operand 344 states and 436 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:33:24,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:24,711 INFO L93 Difference]: Finished difference Result 356 states and 452 transitions. [2022-11-20 10:33:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:24,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2022-11-20 10:33:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:24,714 INFO L225 Difference]: With dead ends: 356 [2022-11-20 10:33:24,714 INFO L226 Difference]: Without dead ends: 355 [2022-11-20 10:33:24,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:24,715 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:24,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 108 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:24,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-20 10:33:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 343. [2022-11-20 10:33:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 274 states have (on average 1.1532846715328466) internal successors, (316), 269 states have internal predecessors, (316), 42 states have call successors, (42), 18 states have call predecessors, (42), 23 states have return successors, (77), 55 states have call predecessors, (77), 41 states have call successors, (77) [2022-11-20 10:33:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 435 transitions. [2022-11-20 10:33:24,752 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 435 transitions. Word has length 74 [2022-11-20 10:33:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:24,752 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 435 transitions. [2022-11-20 10:33:24,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:33:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 435 transitions. [2022-11-20 10:33:24,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 10:33:24,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:24,756 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:24,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:33:24,757 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash 574690621, now seen corresponding path program 1 times [2022-11-20 10:33:24,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:24,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793170426] [2022-11-20 10:33:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:24,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:24,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 10:33:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:24,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:24,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:24,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:33:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-20 10:33:24,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:24,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793170426] [2022-11-20 10:33:24,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793170426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:24,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:24,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:33:24,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358552229] [2022-11-20 10:33:24,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:24,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 10:33:24,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:24,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 10:33:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:33:24,936 INFO L87 Difference]: Start difference. First operand 343 states and 435 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 10:33:25,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:25,052 INFO L93 Difference]: Finished difference Result 414 states and 534 transitions. [2022-11-20 10:33:25,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:33:25,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 74 [2022-11-20 10:33:25,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:25,055 INFO L225 Difference]: With dead ends: 414 [2022-11-20 10:33:25,055 INFO L226 Difference]: Without dead ends: 413 [2022-11-20 10:33:25,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:33:25,056 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 11 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:25,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 288 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-20 10:33:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 375. [2022-11-20 10:33:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 301 states have (on average 1.1395348837209303) internal successors, (343), 291 states have internal predecessors, (343), 45 states have call successors, (45), 18 states have call predecessors, (45), 25 states have return successors, (96), 65 states have call predecessors, (96), 44 states have call successors, (96) [2022-11-20 10:33:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 484 transitions. [2022-11-20 10:33:25,083 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 484 transitions. Word has length 74 [2022-11-20 10:33:25,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:25,084 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 484 transitions. [2022-11-20 10:33:25,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 10:33:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 484 transitions. [2022-11-20 10:33:25,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 10:33:25,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:25,086 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:25,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:33:25,086 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:25,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash 635540138, now seen corresponding path program 1 times [2022-11-20 10:33:25,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:25,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064113488] [2022-11-20 10:33:25,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:25,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 10:33:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:33:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-20 10:33:25,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:25,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064113488] [2022-11-20 10:33:25,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064113488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:25,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:25,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:25,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567062016] [2022-11-20 10:33:25,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:25,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:33:25,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:25,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:33:25,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:25,169 INFO L87 Difference]: Start difference. First operand 375 states and 484 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:33:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:25,211 INFO L93 Difference]: Finished difference Result 394 states and 509 transitions. [2022-11-20 10:33:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:33:25,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 75 [2022-11-20 10:33:25,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:25,215 INFO L225 Difference]: With dead ends: 394 [2022-11-20 10:33:25,215 INFO L226 Difference]: Without dead ends: 393 [2022-11-20 10:33:25,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:25,216 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 111 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 [2022-11-20 10:33:25,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 111 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:33:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-20 10:33:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 367. [2022-11-20 10:33:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 294 states have (on average 1.153061224489796) internal successors, (339), 286 states have internal predecessors, (339), 44 states have call successors, (44), 18 states have call predecessors, (44), 25 states have return successors, (93), 62 states have call predecessors, (93), 43 states have call successors, (93) [2022-11-20 10:33:25,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 476 transitions. [2022-11-20 10:33:25,243 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 476 transitions. Word has length 75 [2022-11-20 10:33:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:25,243 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 476 transitions. [2022-11-20 10:33:25,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:33:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 476 transitions. [2022-11-20 10:33:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 10:33:25,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:25,245 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:25,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:33:25,245 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1451749056, now seen corresponding path program 1 times [2022-11-20 10:33:25,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:25,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014939927] [2022-11-20 10:33:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 10:33:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:33:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:33:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 52 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:33:25,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:25,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014939927] [2022-11-20 10:33:25,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014939927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:25,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052214209] [2022-11-20 10:33:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:25,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:25,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:25,575 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:25,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:33:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:25,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:33:25,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 117 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:33:25,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:33:26,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052214209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:26,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:26,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 23 [2022-11-20 10:33:26,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472735442] [2022-11-20 10:33:26,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:26,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:33:26,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:26,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:33:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:33:26,044 INFO L87 Difference]: Start difference. First operand 367 states and 476 transitions. Second operand has 23 states, 22 states have (on average 4.0) internal successors, (88), 15 states have internal predecessors, (88), 11 states have call successors, (16), 10 states have call predecessors, (16), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:33:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:26,742 INFO L93 Difference]: Finished difference Result 444 states and 553 transitions. [2022-11-20 10:33:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 10:33:26,743 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.0) internal successors, (88), 15 states have internal predecessors, (88), 11 states have call successors, (16), 10 states have call predecessors, (16), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-11-20 10:33:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:26,745 INFO L225 Difference]: With dead ends: 444 [2022-11-20 10:33:26,745 INFO L226 Difference]: Without dead ends: 401 [2022-11-20 10:33:26,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 169 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=313, Invalid=1409, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 10:33:26,747 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 375 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:26,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 217 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:33:26,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-20 10:33:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 393. [2022-11-20 10:33:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 313 states have (on average 1.1533546325878594) internal successors, (361), 308 states have internal predecessors, (361), 46 states have call successors, (46), 20 states have call predecessors, (46), 30 states have return successors, (96), 64 states have call predecessors, (96), 45 states have call successors, (96) [2022-11-20 10:33:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 503 transitions. [2022-11-20 10:33:26,774 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 503 transitions. Word has length 85 [2022-11-20 10:33:26,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:26,774 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 503 transitions. [2022-11-20 10:33:26,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.0) internal successors, (88), 15 states have internal predecessors, (88), 11 states have call successors, (16), 10 states have call predecessors, (16), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:33:26,775 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 503 transitions. [2022-11-20 10:33:26,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 10:33:26,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:26,776 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:26,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:26,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:26,982 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:26,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:26,982 INFO L85 PathProgramCache]: Analyzing trace with hash 338957823, now seen corresponding path program 1 times [2022-11-20 10:33:26,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:26,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368460746] [2022-11-20 10:33:26,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:26,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:33:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:27,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:27,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:27,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:27,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:27,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 10:33:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 10:33:27,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368460746] [2022-11-20 10:33:27,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368460746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529311770] [2022-11-20 10:33:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:27,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:27,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:27,359 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:27,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:33:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:27,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:33:27,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 33 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:33:27,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 10:33:27,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529311770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:27,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:27,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 24 [2022-11-20 10:33:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794551001] [2022-11-20 10:33:27,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:27,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:33:27,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:33:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:33:27,860 INFO L87 Difference]: Start difference. First operand 393 states and 503 transitions. Second operand has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 19 states have internal predecessors, (100), 12 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 10:33:28,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:28,451 INFO L93 Difference]: Finished difference Result 752 states and 997 transitions. [2022-11-20 10:33:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:33:28,452 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 19 states have internal predecessors, (100), 12 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 87 [2022-11-20 10:33:28,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:28,455 INFO L225 Difference]: With dead ends: 752 [2022-11-20 10:33:28,455 INFO L226 Difference]: Without dead ends: 420 [2022-11-20 10:33:28,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 176 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:33:28,460 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 227 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:28,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 567 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:33:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-20 10:33:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 397. [2022-11-20 10:33:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 316 states have (on average 1.1518987341772151) internal successors, (364), 311 states have internal predecessors, (364), 47 states have call successors, (47), 20 states have call predecessors, (47), 30 states have return successors, (91), 65 states have call predecessors, (91), 46 states have call successors, (91) [2022-11-20 10:33:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 502 transitions. [2022-11-20 10:33:28,497 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 502 transitions. Word has length 87 [2022-11-20 10:33:28,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:28,498 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 502 transitions. [2022-11-20 10:33:28,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 19 states have internal predecessors, (100), 12 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 10:33:28,498 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 502 transitions. [2022-11-20 10:33:28,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 10:33:28,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:28,499 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:28,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 10:33:28,705 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:28,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1517976902, now seen corresponding path program 1 times [2022-11-20 10:33:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:28,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194480950] [2022-11-20 10:33:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:28,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:28,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:33:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:28,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:28,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 10:33:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 10:33:28,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194480950] [2022-11-20 10:33:28,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194480950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863074158] [2022-11-20 10:33:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:28,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:28,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:28,948 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:28,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 10:33:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:29,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:33:29,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 10:33:29,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 10:33:29,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863074158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:29,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:29,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2022-11-20 10:33:29,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097191309] [2022-11-20 10:33:29,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:29,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 10:33:29,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:29,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 10:33:29,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:33:29,310 INFO L87 Difference]: Start difference. First operand 397 states and 502 transitions. Second operand has 17 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 10:33:29,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:29,677 INFO L93 Difference]: Finished difference Result 734 states and 929 transitions. [2022-11-20 10:33:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:33:29,678 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 88 [2022-11-20 10:33:29,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:29,681 INFO L225 Difference]: With dead ends: 734 [2022-11-20 10:33:29,682 INFO L226 Difference]: Without dead ends: 407 [2022-11-20 10:33:29,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 178 SyntacticMatches, 12 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:33:29,684 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 171 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:29,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 484 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:33:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-20 10:33:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 397. [2022-11-20 10:33:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 316 states have (on average 1.1518987341772151) internal successors, (364), 311 states have internal predecessors, (364), 47 states have call successors, (47), 20 states have call predecessors, (47), 30 states have return successors, (88), 65 states have call predecessors, (88), 46 states have call successors, (88) [2022-11-20 10:33:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 499 transitions. [2022-11-20 10:33:29,709 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 499 transitions. Word has length 88 [2022-11-20 10:33:29,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:29,709 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 499 transitions. [2022-11-20 10:33:29,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 12 states have internal predecessors, (69), 7 states have call successors, (11), 6 states have call predecessors, (11), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 10:33:29,710 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 499 transitions. [2022-11-20 10:33:29,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 10:33:29,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:29,711 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:29,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:29,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 10:33:29,916 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1711008520, now seen corresponding path program 1 times [2022-11-20 10:33:29,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:29,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865154417] [2022-11-20 10:33:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:29,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 10:33:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:30,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:33:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:30,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:33:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 63 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 10:33:30,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:30,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865154417] [2022-11-20 10:33:30,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865154417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:30,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983481613] [2022-11-20 10:33:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:30,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:30,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:30,267 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:30,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 10:33:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:30,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:33:30,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-20 10:33:30,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:30,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983481613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:30,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:33:30,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19] total 29 [2022-11-20 10:33:30,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571819557] [2022-11-20 10:33:30,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:30,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:33:30,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:30,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:33:30,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-11-20 10:33:30,577 INFO L87 Difference]: Start difference. First operand 397 states and 499 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 10:33:30,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:30,730 INFO L93 Difference]: Finished difference Result 558 states and 754 transitions. [2022-11-20 10:33:30,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:33:30,730 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 92 [2022-11-20 10:33:30,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:30,734 INFO L225 Difference]: With dead ends: 558 [2022-11-20 10:33:30,734 INFO L226 Difference]: Without dead ends: 557 [2022-11-20 10:33:30,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-11-20 10:33:30,735 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 19 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:30,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 287 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:33:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-20 10:33:30,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 470. [2022-11-20 10:33:30,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 375 states have (on average 1.136) internal successors, (426), 365 states have internal predecessors, (426), 55 states have call successors, (55), 20 states have call predecessors, (55), 36 states have return successors, (146), 84 states have call predecessors, (146), 54 states have call successors, (146) [2022-11-20 10:33:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 627 transitions. [2022-11-20 10:33:30,766 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 627 transitions. Word has length 92 [2022-11-20 10:33:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:30,767 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 627 transitions. [2022-11-20 10:33:30,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 10:33:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 627 transitions. [2022-11-20 10:33:30,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 10:33:30,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:30,769 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:30,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:30,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 10:33:30,974 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:30,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1501656497, now seen corresponding path program 1 times [2022-11-20 10:33:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:30,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470917474] [2022-11-20 10:33:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 10:33:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:33:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:31,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:31,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:33:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 63 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 10:33:31,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:31,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470917474] [2022-11-20 10:33:31,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470917474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:31,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862405916] [2022-11-20 10:33:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:31,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:31,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:31,305 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:31,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 10:33:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:31,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:33:31,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-20 10:33:31,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-20 10:33:31,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862405916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:31,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:31,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8, 7] total 31 [2022-11-20 10:33:31,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404835396] [2022-11-20 10:33:31,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:31,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 10:33:31,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:31,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 10:33:31,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2022-11-20 10:33:31,801 INFO L87 Difference]: Start difference. First operand 470 states and 627 transitions. Second operand has 31 states, 30 states have (on average 3.4) internal successors, (102), 25 states have internal predecessors, (102), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 10:33:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:33,741 INFO L93 Difference]: Finished difference Result 961 states and 1393 transitions. [2022-11-20 10:33:33,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 10:33:33,742 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.4) internal successors, (102), 25 states have internal predecessors, (102), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 93 [2022-11-20 10:33:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:33,746 INFO L225 Difference]: With dead ends: 961 [2022-11-20 10:33:33,746 INFO L226 Difference]: Without dead ends: 552 [2022-11-20 10:33:33,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=755, Invalid=4501, Unknown=0, NotChecked=0, Total=5256 [2022-11-20 10:33:33,751 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 398 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:33,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 209 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:33:33,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-20 10:33:33,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 466. [2022-11-20 10:33:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 369 states have (on average 1.1246612466124661) internal successors, (415), 364 states have internal predecessors, (415), 57 states have call successors, (57), 20 states have call predecessors, (57), 36 states have return successors, (168), 81 states have call predecessors, (168), 56 states have call successors, (168) [2022-11-20 10:33:33,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 640 transitions. [2022-11-20 10:33:33,784 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 640 transitions. Word has length 93 [2022-11-20 10:33:33,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:33,785 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 640 transitions. [2022-11-20 10:33:33,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.4) internal successors, (102), 25 states have internal predecessors, (102), 13 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 10:33:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 640 transitions. [2022-11-20 10:33:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 10:33:33,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:33,788 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:33,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:33,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:33,995 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1769978552, now seen corresponding path program 1 times [2022-11-20 10:33:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:33,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159480901] [2022-11-20 10:33:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:34,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:33:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 10:33:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:34,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 10:33:34,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:34,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159480901] [2022-11-20 10:33:34,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159480901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:34,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254190271] [2022-11-20 10:33:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:34,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:34,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:34,389 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:34,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 10:33:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:34,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:33:34,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 10:33:34,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-20 10:33:35,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254190271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:35,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:35,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2022-11-20 10:33:35,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589371792] [2022-11-20 10:33:35,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:35,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 10:33:35,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:35,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 10:33:35,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:33:35,248 INFO L87 Difference]: Start difference. First operand 466 states and 640 transitions. Second operand has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-20 10:33:35,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:35,876 INFO L93 Difference]: Finished difference Result 712 states and 1014 transitions. [2022-11-20 10:33:35,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 10:33:35,877 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) Word has length 107 [2022-11-20 10:33:35,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:35,881 INFO L225 Difference]: With dead ends: 712 [2022-11-20 10:33:35,882 INFO L226 Difference]: Without dead ends: 710 [2022-11-20 10:33:35,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 213 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=296, Invalid=1510, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 10:33:35,883 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 49 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:35,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 585 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:33:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-11-20 10:33:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 540. [2022-11-20 10:33:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 429 states have (on average 1.1142191142191142) internal successors, (478), 422 states have internal predecessors, (478), 63 states have call successors, (63), 20 states have call predecessors, (63), 44 states have return successors, (209), 97 states have call predecessors, (209), 62 states have call successors, (209) [2022-11-20 10:33:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 750 transitions. [2022-11-20 10:33:35,924 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 750 transitions. Word has length 107 [2022-11-20 10:33:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:35,924 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 750 transitions. [2022-11-20 10:33:35,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8076923076923075) internal successors, (73), 27 states have internal predecessors, (73), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-20 10:33:35,925 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 750 transitions. [2022-11-20 10:33:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-20 10:33:35,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:35,926 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:35,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:36,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 10:33:36,138 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:36,138 INFO L85 PathProgramCache]: Analyzing trace with hash -965239639, now seen corresponding path program 1 times [2022-11-20 10:33:36,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:36,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519863448] [2022-11-20 10:33:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:36,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:33:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 10:33:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:36,502 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 10:33:36,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:36,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519863448] [2022-11-20 10:33:36,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519863448] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:36,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982709700] [2022-11-20 10:33:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:36,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:36,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:36,505 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:36,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 10:33:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:36,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:33:36,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-20 10:33:36,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-20 10:33:37,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982709700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:37,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:37,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2022-11-20 10:33:37,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476626608] [2022-11-20 10:33:37,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:37,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 10:33:37,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:37,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 10:33:37,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-11-20 10:33:37,349 INFO L87 Difference]: Start difference. First operand 540 states and 750 transitions. Second operand has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-20 10:33:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:38,033 INFO L93 Difference]: Finished difference Result 1182 states and 1911 transitions. [2022-11-20 10:33:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 10:33:38,034 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 108 [2022-11-20 10:33:38,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:38,042 INFO L225 Difference]: With dead ends: 1182 [2022-11-20 10:33:38,042 INFO L226 Difference]: Without dead ends: 1173 [2022-11-20 10:33:38,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=369, Invalid=1983, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 10:33:38,045 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 74 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:38,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 538 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:33:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-11-20 10:33:38,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 776. [2022-11-20 10:33:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 611 states have (on average 1.0785597381342062) internal successors, (659), 605 states have internal predecessors, (659), 86 states have call successors, (86), 20 states have call predecessors, (86), 75 states have return successors, (470), 150 states have call predecessors, (470), 85 states have call successors, (470) [2022-11-20 10:33:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1215 transitions. [2022-11-20 10:33:38,148 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1215 transitions. Word has length 108 [2022-11-20 10:33:38,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:38,148 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1215 transitions. [2022-11-20 10:33:38,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 29 states have internal predecessors, (82), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-20 10:33:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1215 transitions. [2022-11-20 10:33:38,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-20 10:33:38,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:38,150 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:38,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:38,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 10:33:38,356 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1978084040, now seen corresponding path program 1 times [2022-11-20 10:33:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:38,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843069582] [2022-11-20 10:33:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:33:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 10:33:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 66 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-20 10:33:38,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:38,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843069582] [2022-11-20 10:33:38,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843069582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:38,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959900164] [2022-11-20 10:33:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:38,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:38,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:38,676 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:38,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 10:33:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:38,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:33:38,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 66 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-20 10:33:38,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 66 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-20 10:33:39,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959900164] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:39,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:39,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 20 [2022-11-20 10:33:39,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954538061] [2022-11-20 10:33:39,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:39,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:33:39,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:39,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:33:39,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:33:39,222 INFO L87 Difference]: Start difference. First operand 776 states and 1215 transitions. Second operand has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 16 states have internal predecessors, (90), 11 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 10:33:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:39,736 INFO L93 Difference]: Finished difference Result 1683 states and 2681 transitions. [2022-11-20 10:33:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:33:39,737 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 16 states have internal predecessors, (90), 11 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) Word has length 141 [2022-11-20 10:33:39,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:39,744 INFO L225 Difference]: With dead ends: 1683 [2022-11-20 10:33:39,744 INFO L226 Difference]: Without dead ends: 915 [2022-11-20 10:33:39,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 294 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:33:39,751 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 198 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:39,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 378 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:33:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-11-20 10:33:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 875. [2022-11-20 10:33:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 689 states have (on average 1.0798258345428158) internal successors, (744), 683 states have internal predecessors, (744), 98 states have call successors, (98), 23 states have call predecessors, (98), 84 states have return successors, (535), 168 states have call predecessors, (535), 97 states have call successors, (535) [2022-11-20 10:33:39,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1377 transitions. [2022-11-20 10:33:39,812 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1377 transitions. Word has length 141 [2022-11-20 10:33:39,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:39,813 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1377 transitions. [2022-11-20 10:33:39,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 16 states have internal predecessors, (90), 11 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 10:33:39,814 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1377 transitions. [2022-11-20 10:33:39,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-20 10:33:39,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:39,816 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:39,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:40,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 10:33:40,024 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:40,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1405104475, now seen corresponding path program 2 times [2022-11-20 10:33:40,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:40,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972151293] [2022-11-20 10:33:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:40,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:33:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 10:33:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:33:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:33:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 10:33:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 131 proven. 139 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-20 10:33:40,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:40,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972151293] [2022-11-20 10:33:40,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972151293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:40,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644300257] [2022-11-20 10:33:40,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:33:40,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:40,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:40,482 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:40,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 10:33:40,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:33:40,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:40,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:33:40,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 138 proven. 143 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-20 10:33:40,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 138 proven. 144 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-11-20 10:33:41,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644300257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:41,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:41,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 23 [2022-11-20 10:33:41,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267103667] [2022-11-20 10:33:41,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:41,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:33:41,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:41,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:33:41,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:33:41,356 INFO L87 Difference]: Start difference. First operand 875 states and 1377 transitions. Second operand has 23 states, 22 states have (on average 5.318181818181818) internal successors, (117), 19 states have internal predecessors, (117), 13 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2022-11-20 10:33:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:42,044 INFO L93 Difference]: Finished difference Result 1361 states and 2222 transitions. [2022-11-20 10:33:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:33:42,045 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.318181818181818) internal successors, (117), 19 states have internal predecessors, (117), 13 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) Word has length 178 [2022-11-20 10:33:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:42,049 INFO L225 Difference]: With dead ends: 1361 [2022-11-20 10:33:42,049 INFO L226 Difference]: Without dead ends: 553 [2022-11-20 10:33:42,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 375 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 10:33:42,060 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 232 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:42,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 239 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:33:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-20 10:33:42,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 532. [2022-11-20 10:33:42,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 418 states have (on average 1.0669856459330143) internal successors, (446), 420 states have internal predecessors, (446), 64 states have call successors, (64), 26 states have call predecessors, (64), 48 states have return successors, (179), 85 states have call predecessors, (179), 63 states have call successors, (179) [2022-11-20 10:33:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 689 transitions. [2022-11-20 10:33:42,104 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 689 transitions. Word has length 178 [2022-11-20 10:33:42,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:42,104 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 689 transitions. [2022-11-20 10:33:42,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.318181818181818) internal successors, (117), 19 states have internal predecessors, (117), 13 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2022-11-20 10:33:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 689 transitions. [2022-11-20 10:33:42,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-20 10:33:42,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:42,107 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:33:42,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:42,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 10:33:42,313 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash -895052536, now seen corresponding path program 3 times [2022-11-20 10:33:42,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:42,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746882780] [2022-11-20 10:33:42,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:42,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 10:33:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 10:33:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:43,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 45 proven. 56 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-20 10:33:43,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:43,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746882780] [2022-11-20 10:33:43,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746882780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:43,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241240689] [2022-11-20 10:33:43,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:33:43,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:43,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:43,021 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:43,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 10:33:43,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-20 10:33:43,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:43,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 10:33:43,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 45 proven. 56 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-20 10:33:43,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 74 proven. 51 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-20 10:33:44,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241240689] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:44,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:44,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2022-11-20 10:33:44,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122824100] [2022-11-20 10:33:44,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:44,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 10:33:44,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:44,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 10:33:44,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 10:33:44,859 INFO L87 Difference]: Start difference. First operand 532 states and 689 transitions. Second operand has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-20 10:33:45,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:45,463 INFO L93 Difference]: Finished difference Result 861 states and 1152 transitions. [2022-11-20 10:33:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 10:33:45,464 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) Word has length 160 [2022-11-20 10:33:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:45,469 INFO L225 Difference]: With dead ends: 861 [2022-11-20 10:33:45,470 INFO L226 Difference]: Without dead ends: 840 [2022-11-20 10:33:45,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 324 SyntacticMatches, 16 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=347, Invalid=2203, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 10:33:45,473 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 72 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:45,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 598 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:33:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-20 10:33:45,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 625. [2022-11-20 10:33:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 490 states have (on average 1.046938775510204) internal successors, (513), 493 states have internal predecessors, (513), 74 states have call successors, (74), 26 states have call predecessors, (74), 59 states have return successors, (242), 105 states have call predecessors, (242), 73 states have call successors, (242) [2022-11-20 10:33:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 829 transitions. [2022-11-20 10:33:45,566 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 829 transitions. Word has length 160 [2022-11-20 10:33:45,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:45,566 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 829 transitions. [2022-11-20 10:33:45,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 37 states have internal predecessors, (97), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2022-11-20 10:33:45,568 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 829 transitions. [2022-11-20 10:33:45,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-11-20 10:33:45,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:45,572 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 14, 11, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:45,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-20 10:33:45,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:45,778 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:45,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:45,779 INFO L85 PathProgramCache]: Analyzing trace with hash 772092771, now seen corresponding path program 2 times [2022-11-20 10:33:45,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:45,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390801745] [2022-11-20 10:33:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:45,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:45,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 10:33:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-20 10:33:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-20 10:33:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:33:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 10:33:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 263 proven. 193 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2022-11-20 10:33:46,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:46,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390801745] [2022-11-20 10:33:46,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390801745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:46,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212296326] [2022-11-20 10:33:46,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:33:46,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:46,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:46,290 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:46,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 10:33:46,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:33:46,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:46,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:33:46,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 640 proven. 176 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-20 10:33:46,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 103 proven. 384 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2022-11-20 10:33:47,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212296326] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:47,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:47,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 17] total 35 [2022-11-20 10:33:47,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572145030] [2022-11-20 10:33:47,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:47,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 10:33:47,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:47,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 10:33:47,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 10:33:47,712 INFO L87 Difference]: Start difference. First operand 625 states and 829 transitions. Second operand has 35 states, 33 states have (on average 5.333333333333333) internal successors, (176), 29 states have internal predecessors, (176), 20 states have call successors, (33), 8 states have call predecessors, (33), 9 states have return successors, (29), 15 states have call predecessors, (29), 14 states have call successors, (29) [2022-11-20 10:33:49,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:49,103 INFO L93 Difference]: Finished difference Result 1241 states and 1774 transitions. [2022-11-20 10:33:49,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:33:49,104 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 5.333333333333333) internal successors, (176), 29 states have internal predecessors, (176), 20 states have call successors, (33), 8 states have call predecessors, (33), 9 states have return successors, (29), 15 states have call predecessors, (29), 14 states have call successors, (29) Word has length 254 [2022-11-20 10:33:49,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:49,109 INFO L225 Difference]: With dead ends: 1241 [2022-11-20 10:33:49,109 INFO L226 Difference]: Without dead ends: 563 [2022-11-20 10:33:49,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 531 SyntacticMatches, 11 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=458, Invalid=3082, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 10:33:49,117 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 355 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:49,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 696 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 10:33:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-20 10:33:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 511. [2022-11-20 10:33:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 401 states have (on average 1.0399002493765586) internal successors, (417), 405 states have internal predecessors, (417), 62 states have call successors, (62), 25 states have call predecessors, (62), 46 states have return successors, (143), 80 states have call predecessors, (143), 61 states have call successors, (143) [2022-11-20 10:33:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 622 transitions. [2022-11-20 10:33:49,156 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 622 transitions. Word has length 254 [2022-11-20 10:33:49,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:49,157 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 622 transitions. [2022-11-20 10:33:49,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 5.333333333333333) internal successors, (176), 29 states have internal predecessors, (176), 20 states have call successors, (33), 8 states have call predecessors, (33), 9 states have return successors, (29), 15 states have call predecessors, (29), 14 states have call successors, (29) [2022-11-20 10:33:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 622 transitions. [2022-11-20 10:33:49,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-20 10:33:49,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:49,161 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1] [2022-11-20 10:33:49,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:49,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-20 10:33:49,368 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:49,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:49,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1020299608, now seen corresponding path program 3 times [2022-11-20 10:33:49,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:49,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713147489] [2022-11-20 10:33:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:49,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 10:33:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:33:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-20 10:33:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:33:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 146 proven. 373 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-11-20 10:33:49,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:49,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713147489] [2022-11-20 10:33:49,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713147489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:49,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325065672] [2022-11-20 10:33:49,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:33:49,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:49,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:49,947 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:49,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 10:33:50,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 10:33:50,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:50,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:33:50,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 435 proven. 3 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2022-11-20 10:33:50,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 249 proven. 29 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-11-20 10:33:50,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325065672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:50,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:50,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 27 [2022-11-20 10:33:50,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283038491] [2022-11-20 10:33:50,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:50,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 10:33:50,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:50,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 10:33:50,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2022-11-20 10:33:50,754 INFO L87 Difference]: Start difference. First operand 511 states and 622 transitions. Second operand has 27 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 24 states have internal predecessors, (135), 13 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (26), 12 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-20 10:33:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:51,463 INFO L93 Difference]: Finished difference Result 1079 states and 1419 transitions. [2022-11-20 10:33:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:33:51,464 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 24 states have internal predecessors, (135), 13 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (26), 12 states have call predecessors, (26), 10 states have call successors, (26) Word has length 251 [2022-11-20 10:33:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:51,469 INFO L225 Difference]: With dead ends: 1079 [2022-11-20 10:33:51,470 INFO L226 Difference]: Without dead ends: 642 [2022-11-20 10:33:51,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 545 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 10:33:51,475 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 262 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:51,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 432 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:33:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-11-20 10:33:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 535. [2022-11-20 10:33:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 422 states have (on average 1.0355450236966826) internal successors, (437), 423 states have internal predecessors, (437), 65 states have call successors, (65), 29 states have call predecessors, (65), 46 states have return successors, (132), 82 states have call predecessors, (132), 64 states have call successors, (132) [2022-11-20 10:33:51,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 634 transitions. [2022-11-20 10:33:51,512 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 634 transitions. Word has length 251 [2022-11-20 10:33:51,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:51,513 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 634 transitions. [2022-11-20 10:33:51,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 24 states have internal predecessors, (135), 13 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (26), 12 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-20 10:33:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 634 transitions. [2022-11-20 10:33:51,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-20 10:33:51,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:51,518 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 13, 13, 12, 11, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 2, 1, 1, 1, 1] [2022-11-20 10:33:51,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:51,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-20 10:33:51,724 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:51,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1667393368, now seen corresponding path program 4 times [2022-11-20 10:33:51,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:51,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122939613] [2022-11-20 10:33:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:51,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:51,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 10:33:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:51,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:51,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:33:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-20 10:33:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:33:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 10:33:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 319 proven. 214 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2022-11-20 10:33:52,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:52,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122939613] [2022-11-20 10:33:52,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122939613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:52,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598902948] [2022-11-20 10:33:52,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:33:52,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:52,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:52,304 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:52,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 10:33:52,435 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:33:52,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:52,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:33:52,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 282 proven. 235 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2022-11-20 10:33:52,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 286 proven. 237 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2022-11-20 10:33:53,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598902948] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:53,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:53,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 17] total 28 [2022-11-20 10:33:53,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445436203] [2022-11-20 10:33:53,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:53,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 10:33:53,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:53,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 10:33:53,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-11-20 10:33:53,522 INFO L87 Difference]: Start difference. First operand 535 states and 634 transitions. Second operand has 28 states, 27 states have (on average 5.333333333333333) internal successors, (144), 25 states have internal predecessors, (144), 17 states have call successors, (24), 4 states have call predecessors, (24), 9 states have return successors, (25), 13 states have call predecessors, (25), 14 states have call successors, (25) [2022-11-20 10:33:54,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:54,326 INFO L93 Difference]: Finished difference Result 1029 states and 1290 transitions. [2022-11-20 10:33:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 10:33:54,327 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.333333333333333) internal successors, (144), 25 states have internal predecessors, (144), 17 states have call successors, (24), 4 states have call predecessors, (24), 9 states have return successors, (25), 13 states have call predecessors, (25), 14 states have call successors, (25) Word has length 272 [2022-11-20 10:33:54,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:54,330 INFO L225 Difference]: With dead ends: 1029 [2022-11-20 10:33:54,331 INFO L226 Difference]: Without dead ends: 538 [2022-11-20 10:33:54,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 578 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=340, Invalid=1822, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 10:33:54,335 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 265 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:54,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 373 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:33:54,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-20 10:33:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 504. [2022-11-20 10:33:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 398 states have (on average 1.0251256281407035) internal successors, (408), 397 states have internal predecessors, (408), 60 states have call successors, (60), 28 states have call predecessors, (60), 44 states have return successors, (115), 78 states have call predecessors, (115), 59 states have call successors, (115) [2022-11-20 10:33:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 583 transitions. [2022-11-20 10:33:54,364 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 583 transitions. Word has length 272 [2022-11-20 10:33:54,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:54,365 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 583 transitions. [2022-11-20 10:33:54,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.333333333333333) internal successors, (144), 25 states have internal predecessors, (144), 17 states have call successors, (24), 4 states have call predecessors, (24), 9 states have return successors, (25), 13 states have call predecessors, (25), 14 states have call successors, (25) [2022-11-20 10:33:54,366 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 583 transitions. [2022-11-20 10:33:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-20 10:33:54,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:54,369 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2022-11-20 10:33:54,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:54,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:54,576 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:33:54,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:54,576 INFO L85 PathProgramCache]: Analyzing trace with hash 279369567, now seen corresponding path program 5 times [2022-11-20 10:33:54,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:54,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764031171] [2022-11-20 10:33:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:54,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 10:33:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:33:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-20 10:33:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:55,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:56,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:56,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:56,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:33:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:56,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:33:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:33:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:56,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:33:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 148 proven. 176 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-11-20 10:33:56,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764031171] [2022-11-20 10:33:56,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764031171] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672821512] [2022-11-20 10:33:56,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:33:56,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:56,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:56,075 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:56,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 10:33:56,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-20 10:33:56,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:56,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 10:33:56,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 148 proven. 176 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-11-20 10:33:56,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 218 proven. 155 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-11-20 10:34:00,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672821512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:34:00,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:34:00,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47 [2022-11-20 10:34:00,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516686869] [2022-11-20 10:34:00,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:34:00,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 10:34:00,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:00,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 10:34:00,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 10:34:00,057 INFO L87 Difference]: Start difference. First operand 504 states and 583 transitions. Second operand has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2022-11-20 10:34:00,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:00,418 INFO L93 Difference]: Finished difference Result 554 states and 643 transitions. [2022-11-20 10:34:00,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:34:00,418 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) Word has length 252 [2022-11-20 10:34:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:00,422 INFO L225 Difference]: With dead ends: 554 [2022-11-20 10:34:00,422 INFO L226 Difference]: Without dead ends: 548 [2022-11-20 10:34:00,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 520 SyntacticMatches, 33 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2289 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=371, Invalid=2491, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 10:34:00,424 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 48 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:00,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 657 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:34:00,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-11-20 10:34:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 467. [2022-11-20 10:34:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 368 states have (on average 1.0190217391304348) internal successors, (375), 370 states have internal predecessors, (375), 56 states have call successors, (56), 28 states have call predecessors, (56), 41 states have return successors, (102), 68 states have call predecessors, (102), 55 states have call successors, (102) [2022-11-20 10:34:00,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 533 transitions. [2022-11-20 10:34:00,462 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 533 transitions. Word has length 252 [2022-11-20 10:34:00,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:00,463 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 533 transitions. [2022-11-20 10:34:00,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2022-11-20 10:34:00,463 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 533 transitions. [2022-11-20 10:34:00,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-20 10:34:00,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:00,470 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 15, 13, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 5, 4, 2, 1, 1, 1, 1] [2022-11-20 10:34:00,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:34:00,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:00,676 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:34:00,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1439790170, now seen corresponding path program 4 times [2022-11-20 10:34:00,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:00,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030490881] [2022-11-20 10:34:00,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:00,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:34:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-11-20 10:34:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 263 proven. 550 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2022-11-20 10:34:01,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:01,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030490881] [2022-11-20 10:34:01,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030490881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:01,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292804802] [2022-11-20 10:34:01,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:34:01,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:01,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:34:01,533 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:34:01,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 10:34:01,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:34:01,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:34:01,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:34:01,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 1058 proven. 133 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-20 10:34:01,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 233 proven. 354 refuted. 0 times theorem prover too weak. 1197 trivial. 0 not checked. [2022-11-20 10:34:02,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292804802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:34:02,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:34:02,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 15] total 28 [2022-11-20 10:34:02,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528862327] [2022-11-20 10:34:02,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:34:02,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 10:34:02,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:02,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 10:34:02,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2022-11-20 10:34:02,780 INFO L87 Difference]: Start difference. First operand 467 states and 533 transitions. Second operand has 28 states, 27 states have (on average 6.185185185185185) internal successors, (167), 26 states have internal predecessors, (167), 19 states have call successors, (30), 4 states have call predecessors, (30), 9 states have return successors, (33), 16 states have call predecessors, (33), 17 states have call successors, (33) [2022-11-20 10:34:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:03,477 INFO L93 Difference]: Finished difference Result 955 states and 1150 transitions. [2022-11-20 10:34:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:34:03,478 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 6.185185185185185) internal successors, (167), 26 states have internal predecessors, (167), 19 states have call successors, (30), 4 states have call predecessors, (30), 9 states have return successors, (33), 16 states have call predecessors, (33), 17 states have call successors, (33) Word has length 325 [2022-11-20 10:34:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:03,482 INFO L225 Difference]: With dead ends: 955 [2022-11-20 10:34:03,482 INFO L226 Difference]: Without dead ends: 531 [2022-11-20 10:34:03,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 699 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 10:34:03,485 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 244 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:03,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 387 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:34:03,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-11-20 10:34:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 496. [2022-11-20 10:34:03,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 392 states have (on average 1.0204081632653061) internal successors, (400), 393 states have internal predecessors, (400), 62 states have call successors, (62), 33 states have call predecessors, (62), 40 states have return successors, (95), 69 states have call predecessors, (95), 61 states have call successors, (95) [2022-11-20 10:34:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 557 transitions. [2022-11-20 10:34:03,530 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 557 transitions. Word has length 325 [2022-11-20 10:34:03,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:03,531 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 557 transitions. [2022-11-20 10:34:03,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 6.185185185185185) internal successors, (167), 26 states have internal predecessors, (167), 19 states have call successors, (30), 4 states have call predecessors, (30), 9 states have return successors, (33), 16 states have call predecessors, (33), 17 states have call successors, (33) [2022-11-20 10:34:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 557 transitions. [2022-11-20 10:34:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-20 10:34:03,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:03,538 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 16, 15, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 6, 6, 4, 3, 1, 1, 1, 1] [2022-11-20 10:34:03,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 10:34:03,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-20 10:34:03,744 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:34:03,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:03,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1924653615, now seen corresponding path program 5 times [2022-11-20 10:34:03,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:03,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692147503] [2022-11-20 10:34:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:03,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:03,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:34:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-11-20 10:34:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2260 backedges. 421 proven. 242 refuted. 0 times theorem prover too weak. 1597 trivial. 0 not checked. [2022-11-20 10:34:04,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:04,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692147503] [2022-11-20 10:34:04,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692147503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:04,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558657676] [2022-11-20 10:34:04,357 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:34:04,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:04,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:34:04,358 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:34:04,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 10:34:04,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-20 10:34:04,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:34:04,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 10:34:04,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2260 backedges. 451 proven. 574 refuted. 0 times theorem prover too weak. 1235 trivial. 0 not checked. [2022-11-20 10:34:04,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2260 backedges. 455 proven. 589 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2022-11-20 10:34:06,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558657676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:34:06,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:34:06,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 21] total 34 [2022-11-20 10:34:06,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738488631] [2022-11-20 10:34:06,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:34:06,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 10:34:06,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:06,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 10:34:06,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=972, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:34:06,515 INFO L87 Difference]: Start difference. First operand 496 states and 557 transitions. Second operand has 34 states, 33 states have (on average 5.545454545454546) internal successors, (183), 32 states have internal predecessors, (183), 26 states have call successors, (33), 3 states have call predecessors, (33), 10 states have return successors, (35), 15 states have call predecessors, (35), 24 states have call successors, (35) [2022-11-20 10:34:07,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:07,455 INFO L93 Difference]: Finished difference Result 901 states and 1023 transitions. [2022-11-20 10:34:07,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 10:34:07,456 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.545454545454546) internal successors, (183), 32 states have internal predecessors, (183), 26 states have call successors, (33), 3 states have call predecessors, (33), 10 states have return successors, (35), 15 states have call predecessors, (35), 24 states have call successors, (35) Word has length 364 [2022-11-20 10:34:07,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:07,459 INFO L225 Difference]: With dead ends: 901 [2022-11-20 10:34:07,459 INFO L226 Difference]: Without dead ends: 486 [2022-11-20 10:34:07,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 773 SyntacticMatches, 10 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=326, Invalid=1836, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 10:34:07,462 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 473 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:07,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 513 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:34:07,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-20 10:34:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 472. [2022-11-20 10:34:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 374 states have (on average 1.0213903743315509) internal successors, (382), 375 states have internal predecessors, (382), 58 states have call successors, (58), 34 states have call predecessors, (58), 38 states have return successors, (82), 62 states have call predecessors, (82), 57 states have call successors, (82) [2022-11-20 10:34:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 522 transitions. [2022-11-20 10:34:07,489 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 522 transitions. Word has length 364 [2022-11-20 10:34:07,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:07,490 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 522 transitions. [2022-11-20 10:34:07,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.545454545454546) internal successors, (183), 32 states have internal predecessors, (183), 26 states have call successors, (33), 3 states have call predecessors, (33), 10 states have return successors, (35), 15 states have call predecessors, (35), 24 states have call successors, (35) [2022-11-20 10:34:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 522 transitions. [2022-11-20 10:34:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-20 10:34:07,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:07,499 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 21, 20, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 5, 3, 1, 1, 1, 1] [2022-11-20 10:34:07,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 10:34:07,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 10:34:07,705 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:34:07,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:07,705 INFO L85 PathProgramCache]: Analyzing trace with hash 441342607, now seen corresponding path program 6 times [2022-11-20 10:34:07,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:07,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624709883] [2022-11-20 10:34:07,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:07,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:34:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-11-20 10:34:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 10:34:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3094 backedges. 749 proven. 352 refuted. 0 times theorem prover too weak. 1993 trivial. 0 not checked. [2022-11-20 10:34:08,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:08,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624709883] [2022-11-20 10:34:08,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624709883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:08,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25729647] [2022-11-20 10:34:08,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:34:08,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:08,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:34:08,640 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:34:08,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 10:34:08,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-11-20 10:34:08,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:34:08,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:34:08,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3094 backedges. 803 proven. 100 refuted. 0 times theorem prover too weak. 2191 trivial. 0 not checked. [2022-11-20 10:34:09,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3094 backedges. 803 proven. 107 refuted. 0 times theorem prover too weak. 2184 trivial. 0 not checked. [2022-11-20 10:34:10,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25729647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:34:10,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:34:10,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 15] total 34 [2022-11-20 10:34:10,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188684950] [2022-11-20 10:34:10,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:34:10,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 10:34:10,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:10,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 10:34:10,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:34:10,286 INFO L87 Difference]: Start difference. First operand 472 states and 522 transitions. Second operand has 34 states, 33 states have (on average 5.393939393939394) internal successors, (178), 32 states have internal predecessors, (178), 22 states have call successors, (32), 3 states have call predecessors, (32), 10 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) [2022-11-20 10:34:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:11,394 INFO L93 Difference]: Finished difference Result 874 states and 990 transitions. [2022-11-20 10:34:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 10:34:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.393939393939394) internal successors, (178), 32 states have internal predecessors, (178), 22 states have call successors, (32), 3 states have call predecessors, (32), 10 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) Word has length 423 [2022-11-20 10:34:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:11,399 INFO L225 Difference]: With dead ends: 874 [2022-11-20 10:34:11,399 INFO L226 Difference]: Without dead ends: 475 [2022-11-20 10:34:11,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 911 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=437, Invalid=2425, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 10:34:11,402 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 218 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:11,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 637 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 10:34:11,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-20 10:34:11,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 446. [2022-11-20 10:34:11,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 354 states have (on average 1.0225988700564972) internal successors, (362), 354 states have internal predecessors, (362), 55 states have call successors, (55), 34 states have call predecessors, (55), 35 states have return successors, (69), 57 states have call predecessors, (69), 54 states have call successors, (69) [2022-11-20 10:34:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 486 transitions. [2022-11-20 10:34:11,428 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 486 transitions. Word has length 423 [2022-11-20 10:34:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:11,429 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 486 transitions. [2022-11-20 10:34:11,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.393939393939394) internal successors, (178), 32 states have internal predecessors, (178), 22 states have call successors, (32), 3 states have call predecessors, (32), 10 states have return successors, (35), 19 states have call predecessors, (35), 20 states have call successors, (35) [2022-11-20 10:34:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 486 transitions. [2022-11-20 10:34:11,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-20 10:34:11,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:11,433 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 17, 17, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 7, 6, 4, 4, 1, 1, 1, 1] [2022-11-20 10:34:11,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 10:34:11,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 10:34:11,639 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:34:11,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1991199088, now seen corresponding path program 7 times [2022-11-20 10:34:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:11,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011334588] [2022-11-20 10:34:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:11,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:34:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-11-20 10:34:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 432 proven. 516 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2022-11-20 10:34:14,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:14,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011334588] [2022-11-20 10:34:14,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011334588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:14,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749552535] [2022-11-20 10:34:14,630 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:34:14,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:14,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:34:14,631 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:34:14,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 10:34:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:14,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-20 10:34:14,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 432 proven. 516 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2022-11-20 10:34:15,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 585 proven. 459 refuted. 0 times theorem prover too weak. 1749 trivial. 0 not checked. [2022-11-20 10:34:23,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749552535] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:34:23,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:34:23,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 37] total 58 [2022-11-20 10:34:23,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455133946] [2022-11-20 10:34:23,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:34:23,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-20 10:34:23,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:23,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-20 10:34:23,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=3007, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 10:34:23,103 INFO L87 Difference]: Start difference. First operand 446 states and 486 transitions. Second operand has 59 states, 58 states have (on average 2.603448275862069) internal successors, (151), 59 states have internal predecessors, (151), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) [2022-11-20 10:34:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:23,356 INFO L93 Difference]: Finished difference Result 451 states and 491 transitions. [2022-11-20 10:34:23,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 10:34:23,357 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.603448275862069) internal successors, (151), 59 states have internal predecessors, (151), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) Word has length 403 [2022-11-20 10:34:23,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:23,359 INFO L225 Difference]: With dead ends: 451 [2022-11-20 10:34:23,359 INFO L226 Difference]: Without dead ends: 342 [2022-11-20 10:34:23,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 846 SyntacticMatches, 62 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4485 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=431, Invalid=3109, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 10:34:23,361 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 38 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:23,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 656 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:34:23,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-20 10:34:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 331. [2022-11-20 10:34:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 264 states have (on average 1.0227272727272727) internal successors, (270), 263 states have internal predecessors, (270), 40 states have call successors, (40), 30 states have call predecessors, (40), 26 states have return successors, (42), 37 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-20 10:34:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 352 transitions. [2022-11-20 10:34:23,382 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 352 transitions. Word has length 403 [2022-11-20 10:34:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:23,383 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 352 transitions. [2022-11-20 10:34:23,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.603448275862069) internal successors, (151), 59 states have internal predecessors, (151), 15 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (40), 40 states have call predecessors, (40), 15 states have call successors, (40) [2022-11-20 10:34:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 352 transitions. [2022-11-20 10:34:23,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2022-11-20 10:34:23,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:23,388 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 30, 26, 25, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1] [2022-11-20 10:34:23,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-20 10:34:23,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:23,595 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:34:23,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1821309479, now seen corresponding path program 6 times [2022-11-20 10:34:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:23,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605918072] [2022-11-20 10:34:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:34:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:34:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-20 10:34:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-11-20 10:34:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:34:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6644 backedges. 1375 proven. 277 refuted. 0 times theorem prover too weak. 4992 trivial. 0 not checked. [2022-11-20 10:34:24,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:24,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605918072] [2022-11-20 10:34:24,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605918072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:24,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155855846] [2022-11-20 10:34:24,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:34:24,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:24,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:34:24,727 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:34:24,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 10:34:25,092 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-20 10:34:25,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:34:25,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:34:25,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6644 backedges. 1281 proven. 107 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2022-11-20 10:34:25,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6644 backedges. 1281 proven. 113 refuted. 0 times theorem prover too weak. 5250 trivial. 0 not checked. [2022-11-20 10:34:26,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155855846] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:34:26,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:34:26,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 15] total 32 [2022-11-20 10:34:26,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102846004] [2022-11-20 10:34:26,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:34:26,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 10:34:26,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:26,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 10:34:26,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:34:26,799 INFO L87 Difference]: Start difference. First operand 331 states and 352 transitions. Second operand has 32 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 19 states have call successors, (30), 2 states have call predecessors, (30), 11 states have return successors, (33), 19 states have call predecessors, (33), 18 states have call successors, (33) [2022-11-20 10:34:27,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:27,351 INFO L93 Difference]: Finished difference Result 401 states and 424 transitions. [2022-11-20 10:34:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 10:34:27,352 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 19 states have call successors, (30), 2 states have call predecessors, (30), 11 states have return successors, (33), 19 states have call predecessors, (33), 18 states have call successors, (33) Word has length 613 [2022-11-20 10:34:27,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:27,355 INFO L225 Difference]: With dead ends: 401 [2022-11-20 10:34:27,355 INFO L226 Difference]: Without dead ends: 342 [2022-11-20 10:34:27,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1330 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=276, Invalid=1530, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 10:34:27,357 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 220 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:27,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 398 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:34:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-20 10:34:27,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 332. [2022-11-20 10:34:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 266 states have (on average 1.0150375939849625) internal successors, (270), 263 states have internal predecessors, (270), 39 states have call successors, (39), 31 states have call predecessors, (39), 26 states have return successors, (41), 37 states have call predecessors, (41), 38 states have call successors, (41) [2022-11-20 10:34:27,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 350 transitions. [2022-11-20 10:34:27,376 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 350 transitions. Word has length 613 [2022-11-20 10:34:27,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:27,377 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 350 transitions. [2022-11-20 10:34:27,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.419354838709677) internal successors, (168), 31 states have internal predecessors, (168), 19 states have call successors, (30), 2 states have call predecessors, (30), 11 states have return successors, (33), 19 states have call predecessors, (33), 18 states have call successors, (33) [2022-11-20 10:34:27,378 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 350 transitions. [2022-11-20 10:34:27,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2022-11-20 10:34:27,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:27,383 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 33, 32, 28, 27, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 12, 9, 8, 6, 1, 1, 1, 1] [2022-11-20 10:34:27,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 10:34:27,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:27,590 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:34:27,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:27,591 INFO L85 PathProgramCache]: Analyzing trace with hash -490786802, now seen corresponding path program 7 times [2022-11-20 10:34:27,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:27,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870670103] [2022-11-20 10:34:27,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:27,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:27,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:34:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:34:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-20 10:34:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-11-20 10:34:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-20 10:34:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 1674 proven. 559 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2022-11-20 10:34:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:28,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870670103] [2022-11-20 10:34:28,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870670103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:28,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973726254] [2022-11-20 10:34:28,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 10:34:28,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:28,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:34:28,715 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:34:28,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-20 10:34:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:29,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 10:34:29,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 1071 proven. 376 refuted. 0 times theorem prover too weak. 6563 trivial. 0 not checked. [2022-11-20 10:34:29,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 1075 proven. 384 refuted. 0 times theorem prover too weak. 6551 trivial. 0 not checked. [2022-11-20 10:34:30,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973726254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:34:30,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:34:30,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 15] total 33 [2022-11-20 10:34:30,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554110675] [2022-11-20 10:34:30,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:34:30,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 10:34:30,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:30,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 10:34:30,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 10:34:30,963 INFO L87 Difference]: Start difference. First operand 332 states and 350 transitions. Second operand has 33 states, 32 states have (on average 5.4375) internal successors, (174), 32 states have internal predecessors, (174), 21 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (37), 22 states have call predecessors, (37), 20 states have call successors, (37) [2022-11-20 10:34:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:31,914 INFO L93 Difference]: Finished difference Result 551 states and 587 transitions. [2022-11-20 10:34:31,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 10:34:31,914 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.4375) internal successors, (174), 32 states have internal predecessors, (174), 21 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (37), 22 states have call predecessors, (37), 20 states have call successors, (37) Word has length 671 [2022-11-20 10:34:31,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:31,918 INFO L225 Difference]: With dead ends: 551 [2022-11-20 10:34:31,918 INFO L226 Difference]: Without dead ends: 347 [2022-11-20 10:34:31,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 1461 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=2522, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 10:34:31,920 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 272 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:31,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 488 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:34:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-11-20 10:34:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 327. [2022-11-20 10:34:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 262 states have (on average 1.015267175572519) internal successors, (266), 259 states have internal predecessors, (266), 39 states have call successors, (39), 31 states have call predecessors, (39), 25 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-20 10:34:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 343 transitions. [2022-11-20 10:34:31,940 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 343 transitions. Word has length 671 [2022-11-20 10:34:31,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:31,941 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 343 transitions. [2022-11-20 10:34:31,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.4375) internal successors, (174), 32 states have internal predecessors, (174), 21 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (37), 22 states have call predecessors, (37), 20 states have call successors, (37) [2022-11-20 10:34:31,942 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 343 transitions. [2022-11-20 10:34:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2022-11-20 10:34:31,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:34:31,947 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 33, 32, 27, 27, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1] [2022-11-20 10:34:31,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-20 10:34:32,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-20 10:34:32,155 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-20 10:34:32,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:34:32,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1217067304, now seen corresponding path program 8 times [2022-11-20 10:34:32,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:34:32,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293967748] [2022-11-20 10:34:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:34:32,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:34:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:35,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:34:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:35,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:34:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:36,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-20 10:34:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-11-20 10:34:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-20 10:34:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-20 10:34:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:38,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:38,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:34:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:38,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:34:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:34:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:34:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:34:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 1237 proven. 1424 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2022-11-20 10:34:38,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:34:38,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293967748] [2022-11-20 10:34:38,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293967748] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:34:38,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76971873] [2022-11-20 10:34:38,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:34:38,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:38,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:34:38,054 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:34:38,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-20 10:34:38,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:34:38,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:34:38,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 133 conjunts are in the unsatisfiable core [2022-11-20 10:34:38,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 1237 proven. 1424 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2022-11-20 10:34:39,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:34:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 1543 proven. 1300 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2022-11-20 10:34:57,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76971873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:34:57,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:34:57,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 46] total 69 [2022-11-20 10:34:57,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671068822] [2022-11-20 10:34:57,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:34:57,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-20 10:34:57,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:34:57,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-20 10:34:57,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=4261, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 10:34:57,737 INFO L87 Difference]: Start difference. First operand 327 states and 343 transitions. Second operand has 70 states, 69 states have (on average 2.579710144927536) internal successors, (178), 70 states have internal predecessors, (178), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) [2022-11-20 10:34:58,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:34:58,015 INFO L93 Difference]: Finished difference Result 327 states and 343 transitions. [2022-11-20 10:34:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 10:34:58,016 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.579710144927536) internal successors, (178), 70 states have internal predecessors, (178), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) Word has length 652 [2022-11-20 10:34:58,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:34:58,017 INFO L225 Difference]: With dead ends: 327 [2022-11-20 10:34:58,017 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 10:34:58,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1567 GetRequests, 1388 SyntacticMatches, 111 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8705 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=569, Invalid=4261, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 10:34:58,020 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 53 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:34:58,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 804 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:34:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 10:34:58,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 10:34:58,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:34:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 10:34:58,022 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 652 [2022-11-20 10:34:58,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:34:58,022 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:34:58,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.579710144927536) internal successors, (178), 70 states have internal predecessors, (178), 18 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (48), 48 states have call predecessors, (48), 18 states have call successors, (48) [2022-11-20 10:34:58,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:34:58,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 10:34:58,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-20 10:34:58,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-20 10:34:58,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-20 10:34:58,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-20 10:34:58,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-20 10:34:58,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-20 10:34:58,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-11-20 10:34:58,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-11-20 10:34:58,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-20 10:34:58,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-20 10:34:58,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-20 10:34:58,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-20 10:34:58,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-20 10:34:58,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:34:58,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 10:35:06,958 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 10:35:06,959 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 10:35:06,959 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 10:35:06,959 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 10:35:06,959 INFO L895 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 8) [2022-11-20 10:35:06,959 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-11-20 10:35:06,959 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2022-11-20 10:35:06,960 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= 8 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 8)) [2022-11-20 10:35:06,960 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-11-20 10:35:06,960 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-11-20 10:35:06,960 INFO L902 garLoopResultBuilder]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2022-11-20 10:35:06,960 INFO L899 garLoopResultBuilder]: For program point fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,960 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,960 INFO L899 garLoopResultBuilder]: For program point fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,960 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,960 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (and (not (<= |fibo2_#in~n| 2)) (or (not (<= |fibo2_#in~n| 7)) (= fibo2_~n |fibo2_#in~n|))) [2022-11-20 10:35:06,960 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,961 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,961 INFO L899 garLoopResultBuilder]: For program point L25-5(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,961 INFO L895 garLoopResultBuilder]: At program point L25-6(line 25) the Hoare annotation is: (and (or (not (<= |fibo2_#in~n| 7)) (and (<= |fibo2_#t~ret6| 8) (= fibo2_~n |fibo2_#in~n|) (<= 1 |fibo2_#t~ret6|))) (or (<= |fibo2_#t~ret6| 5) (<= 7 |fibo2_#in~n|)) (or (not (<= |fibo2_#in~n| 5)) (and (<= |fibo2_#t~ret6| 3) (<= 5 fibo2_~n)) (<= |fibo2_#t~ret6| 2)) (not (<= |fibo2_#in~n| 2)) (or (<= |fibo2_#t~ret6| 1) (not (<= |fibo2_#in~n| 3)))) [2022-11-20 10:35:06,961 INFO L899 garLoopResultBuilder]: For program point L25-7(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,961 INFO L899 garLoopResultBuilder]: For program point L25-8(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,961 INFO L899 garLoopResultBuilder]: For program point L25-9(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,962 INFO L899 garLoopResultBuilder]: For program point fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,962 INFO L899 garLoopResultBuilder]: For program point fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,962 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2022-11-20 10:35:06,962 INFO L899 garLoopResultBuilder]: For program point fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,962 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2022-11-20 10:35:06,962 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2022-11-20 10:35:06,963 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2022-11-20 10:35:06,963 INFO L899 garLoopResultBuilder]: For program point fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-20 10:35:06,963 INFO L899 garLoopResultBuilder]: For program point fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,963 INFO L899 garLoopResultBuilder]: For program point fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,963 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,963 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,964 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (not (<= |fibo1_#in~n| 2)) (or (not (<= |fibo1_#in~n| 8)) (not (<= 8 |fibo1_#in~n|)) .cse0) (or .cse0 (not (<= |fibo1_#in~n| 6))))) [2022-11-20 10:35:06,964 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,964 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,964 INFO L899 garLoopResultBuilder]: For program point fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,964 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2022-11-20 10:35:06,965 INFO L899 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,965 INFO L895 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse2 (<= 2 |fibo1_#t~ret4|)) (.cse3 (= fibo1_~n |fibo1_#in~n|))) (and (let ((.cse0 (<= 5 |fibo1_#in~n|)) (.cse1 (<= |fibo1_#t~ret4| 5))) (or (and .cse0 .cse1 (<= |fibo1_#t~ret4| 3) .cse2 .cse3) (not .cse0) (not (<= |fibo1_#in~n| 6)) (and .cse0 .cse1 .cse2 .cse3 (<= 6 fibo1_~n)))) (not (<= |fibo1_#in~n| 2)) (or (not (<= |fibo1_#in~n| 4)) (and (= |fibo1_#t~ret4| 1) (<= fibo1_~n 3) .cse3) (and (<= 4 |fibo1_#in~n|) .cse2 .cse3 (<= |fibo1_#t~ret4| 2))) (or (not (<= |fibo1_#in~n| 8)) (not (<= 8 |fibo1_#in~n|)) (and .cse2 .cse3 (<= |fibo1_#t~ret4| 13))))) [2022-11-20 10:35:06,965 INFO L899 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,965 INFO L899 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,965 INFO L899 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,966 INFO L899 garLoopResultBuilder]: For program point fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,966 INFO L902 garLoopResultBuilder]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2022-11-20 10:35:06,966 INFO L899 garLoopResultBuilder]: For program point fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,966 INFO L899 garLoopResultBuilder]: For program point fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-20 10:35:06,966 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2022-11-20 10:35:06,966 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2022-11-20 10:35:06,967 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2022-11-20 10:35:06,970 INFO L444 BasicCegarLoop]: Path program histogram: [8, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:35:06,972 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:35:06,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:35:06 BoogieIcfgContainer [2022-11-20 10:35:06,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:35:06,991 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:35:06,992 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:35:06,992 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:35:06,992 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:12" (3/4) ... [2022-11-20 10:35:06,996 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:35:07,004 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2022-11-20 10:35:07,004 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2022-11-20 10:35:07,008 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-20 10:35:07,008 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 10:35:07,008 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:35:07,008 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:35:07,040 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:35:07,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:35:07,041 INFO L158 Benchmark]: Toolchain (without parser) took 115110.37ms. Allocated memory was 155.2MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 123.6MB in the beginning and 578.1MB in the end (delta: -454.5MB). Peak memory consumption was 585.8MB. Max. memory is 16.1GB. [2022-11-20 10:35:07,041 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 155.2MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:35:07,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.97ms. Allocated memory is still 155.2MB. Free memory was 123.2MB in the beginning and 113.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:35:07,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.96ms. Allocated memory is still 155.2MB. Free memory was 113.5MB in the beginning and 111.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:35:07,042 INFO L158 Benchmark]: Boogie Preprocessor took 41.13ms. Allocated memory is still 155.2MB. Free memory was 111.8MB in the beginning and 111.1MB in the end (delta: 759.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:35:07,042 INFO L158 Benchmark]: RCFGBuilder took 425.89ms. Allocated memory is still 155.2MB. Free memory was 110.7MB in the beginning and 99.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:35:07,043 INFO L158 Benchmark]: TraceAbstraction took 114325.42ms. Allocated memory was 155.2MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 98.9MB in the beginning and 580.2MB in the end (delta: -481.3MB). Peak memory consumption was 703.2MB. Max. memory is 16.1GB. [2022-11-20 10:35:07,043 INFO L158 Benchmark]: Witness Printer took 49.09ms. Allocated memory is still 1.2GB. Free memory was 580.2MB in the beginning and 578.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:35:07,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 155.2MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.97ms. Allocated memory is still 155.2MB. Free memory was 123.2MB in the beginning and 113.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.96ms. Allocated memory is still 155.2MB. Free memory was 113.5MB in the beginning and 111.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.13ms. Allocated memory is still 155.2MB. Free memory was 111.8MB in the beginning and 111.1MB in the end (delta: 759.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 425.89ms. Allocated memory is still 155.2MB. Free memory was 110.7MB in the beginning and 99.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 114325.42ms. Allocated memory was 155.2MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 98.9MB in the beginning and 580.2MB in the end (delta: -481.3MB). Peak memory consumption was 703.2MB. Max. memory is 16.1GB. * Witness Printer took 49.09ms. Allocated memory is still 1.2GB. Free memory was 580.2MB in the beginning and 578.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 52 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 114.2s, OverallIterations: 41, TraceHistogramMax: 36, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.1s, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5735 SdHoareTripleChecker+Valid, 12.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5559 mSDsluCounter, 14588 SdHoareTripleChecker+Invalid, 10.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12751 mSDsCounter, 2410 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19468 IncrementalHoareTripleChecker+Invalid, 21878 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2410 mSolverCounterUnsat, 1837 mSDtfsCounter, 19468 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14082 GetRequests, 12538 SyntacticMatches, 407 SemanticMatches, 1137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26467 ImplicationChecksByTransitivity, 18.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=875occurred in iteration=28, InterpolantAutomatonStates: 807, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 41 MinimizatonAttempts, 1693 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 2306 PreInvPairs, 3641 NumberOfFragments, 193 HoareAnnotationTreeSize, 2306 FomulaSimplifications, 112021 FormulaSimplificationTreeSizeReduction, 5.6s HoareSimplificationTime, 8 FomulaSimplificationsInter, 57670 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 73.1s InterpolantComputationTime, 12525 NumberOfCodeBlocks, 11700 NumberOfCodeBlocksAsserted, 127 NumberOfCheckSat, 18230 ConstructedInterpolants, 0 QuantifiedInterpolants, 34039 SizeOfPredicates, 116 NumberOfNonLiveVariables, 10363 ConjunctsInSsa, 622 ConjunctsInUnsatCore, 96 InterpolantComputations, 16 PerfectInterpolantSequences, 102584/117515 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: x <= 8 RESULT: Ultimate proved your program to be correct! [2022-11-20 10:35:07,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76b20cff-0467-4fb0-b1ef-c04d8447fc6c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE