./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:06:16,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:06:16,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:06:16,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:06:16,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:06:16,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:06:16,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:06:16,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:06:16,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:06:16,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:06:16,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:06:16,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:06:16,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:06:16,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:06:16,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:06:16,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:06:16,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:06:16,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:06:16,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:06:16,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:06:16,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:06:16,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:06:16,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:06:16,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:06:16,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:06:16,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:06:16,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:06:16,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:06:16,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:06:16,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:06:16,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:06:16,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:06:16,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:06:16,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:06:16,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:06:16,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:06:16,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:06:16,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:06:16,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:06:16,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:06:16,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:06:16,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:06:16,234 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:06:16,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:06:16,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:06:16,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:06:16,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:06:16,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:06:16,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:06:16,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:06:16,237 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:06:16,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:06:16,237 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:06:16,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:06:16,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:06:16,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:06:16,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:06:16,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:06:16,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:06:16,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:06:16,239 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:06:16,239 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:06:16,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:06:16,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:06:16,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:06:16,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:06:16,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:06:16,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:06:16,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:06:16,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:06:16,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:06:16,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:06:16,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:06:16,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:06:16,250 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:06:16,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:06:16,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:06:16,251 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_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 [2022-11-18 20:06:16,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:06:16,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:06:16,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:06:16,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:06:16,571 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:06:16,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2022-11-18 20:06:16,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/data/0967cafb5/4660612023134585a33fade09186eccb/FLAGb41710c56 [2022-11-18 20:06:17,194 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:06:17,194 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2022-11-18 20:06:17,200 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/data/0967cafb5/4660612023134585a33fade09186eccb/FLAGb41710c56 [2022-11-18 20:06:17,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/data/0967cafb5/4660612023134585a33fade09186eccb [2022-11-18 20:06:17,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:06:17,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:06:17,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:06:17,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:06:17,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:06:17,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d21897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17, skipping insertion in model container [2022-11-18 20:06:17,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:06:17,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:06:17,772 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2022-11-18 20:06:17,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:06:17,800 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:06:17,816 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2022-11-18 20:06:17,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:06:17,830 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:06:17,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17 WrapperNode [2022-11-18 20:06:17,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:06:17,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:06:17,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:06:17,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:06:17,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,864 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-18 20:06:17,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:06:17,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:06:17,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:06:17,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:06:17,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:06:17,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:06:17,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:06:17,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:06:17,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (1/1) ... [2022-11-18 20:06:17,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:06:17,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:17,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:06:17,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:06:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:06:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:06:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-18 20:06:17,959 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-18 20:06:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-18 20:06:17,960 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-18 20:06:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:06:17,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:06:18,024 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:06:18,026 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:06:18,216 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:06:18,224 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:06:18,239 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:06:18,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:18 BoogieIcfgContainer [2022-11-18 20:06:18,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:06:18,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:06:18,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:06:18,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:06:18,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:06:17" (1/3) ... [2022-11-18 20:06:18,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2533dc3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:06:18, skipping insertion in model container [2022-11-18 20:06:18,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:17" (2/3) ... [2022-11-18 20:06:18,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2533dc3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:06:18, skipping insertion in model container [2022-11-18 20:06:18,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:18" (3/3) ... [2022-11-18 20:06:18,265 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2022-11-18 20:06:18,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:06:18,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 20:06:18,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:06:18,402 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;@34c3b772, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:06:18,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-18 20:06:18,407 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) [2022-11-18 20:06:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:06:18,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:18,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:18,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:18,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1865119399, now seen corresponding path program 1 times [2022-11-18 20:06:18,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:18,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262896675] [2022-11-18 20:06:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:18,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:18,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:18,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262896675] [2022-11-18 20:06:18,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262896675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:18,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:18,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:18,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727873323] [2022-11-18 20:06:18,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:18,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:18,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:18,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:18,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:18,706 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) [2022-11-18 20:06:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:18,913 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2022-11-18 20:06:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:06:18,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 20:06:18,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:18,938 INFO L225 Difference]: With dead ends: 79 [2022-11-18 20:06:18,938 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 20:06:18,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:06:18,945 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 [2022-11-18 20:06:18,946 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] [2022-11-18 20:06:18,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 20:06:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-11-18 20:06:19,010 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) [2022-11-18 20:06:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-11-18 20:06:19,021 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 7 [2022-11-18 20:06:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:19,021 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-11-18 20:06:19,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-11-18 20:06:19,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:06:19,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:19,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:19,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:06:19,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:19,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:19,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1984126606, now seen corresponding path program 1 times [2022-11-18 20:06:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:19,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374470251] [2022-11-18 20:06:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:19,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:19,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:19,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374470251] [2022-11-18 20:06:19,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374470251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:19,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:19,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:19,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754330103] [2022-11-18 20:06:19,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:19,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:19,101 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) [2022-11-18 20:06:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:19,162 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-11-18 20:06:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:19,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:06:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:19,165 INFO L225 Difference]: With dead ends: 60 [2022-11-18 20:06:19,165 INFO L226 Difference]: Without dead ends: 58 [2022-11-18 20:06:19,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:19,167 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 [2022-11-18 20:06:19,168 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] [2022-11-18 20:06:19,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-18 20:06:19,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2022-11-18 20:06:19,211 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) [2022-11-18 20:06:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-11-18 20:06:19,214 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2022-11-18 20:06:19,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:19,214 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-11-18 20:06:19,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-11-18 20:06:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:06:19,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:19,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:19,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:06:19,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:19,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:19,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1532318177, now seen corresponding path program 1 times [2022-11-18 20:06:19,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:19,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363803374] [2022-11-18 20:06:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:19,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:19,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:19,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363803374] [2022-11-18 20:06:19,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363803374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:19,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:19,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:06:19,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994852236] [2022-11-18 20:06:19,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:19,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:06:19,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:19,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:06:19,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:06:19,434 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) [2022-11-18 20:06:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:19,615 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-11-18 20:06:19,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:06:19,616 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 [2022-11-18 20:06:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:19,617 INFO L225 Difference]: With dead ends: 56 [2022-11-18 20:06:19,617 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 20:06:19,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:06:19,619 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 [2022-11-18 20:06:19,620 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] [2022-11-18 20:06:19,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 20:06:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-18 20:06:19,627 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) [2022-11-18 20:06:19,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-11-18 20:06:19,629 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 13 [2022-11-18 20:06:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:19,629 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-11-18 20:06:19,630 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) [2022-11-18 20:06:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-11-18 20:06:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 20:06:19,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:19,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:19,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:06:19,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:19,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:19,633 INFO L85 PathProgramCache]: Analyzing trace with hash 257223290, now seen corresponding path program 1 times [2022-11-18 20:06:19,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:19,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556749179] [2022-11-18 20:06:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:19,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:19,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:19,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556749179] [2022-11-18 20:06:19,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556749179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:19,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:19,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:19,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911070227] [2022-11-18 20:06:19,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:19,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:06:19,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:19,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:06:19,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:19,673 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) [2022-11-18 20:06:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:19,695 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2022-11-18 20:06:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:06:19,696 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 [2022-11-18 20:06:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:19,697 INFO L225 Difference]: With dead ends: 54 [2022-11-18 20:06:19,698 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 20:06:19,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:06:19,700 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 [2022-11-18 20:06:19,700 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] [2022-11-18 20:06:19,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 20:06:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2022-11-18 20:06:19,709 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) [2022-11-18 20:06:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-11-18 20:06:19,711 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2022-11-18 20:06:19,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:19,711 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-11-18 20:06:19,712 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) [2022-11-18 20:06:19,712 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-11-18 20:06:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:06:19,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:19,713 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] [2022-11-18 20:06:19,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:06:19,714 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash 802214107, now seen corresponding path program 1 times [2022-11-18 20:06:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:19,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486079672] [2022-11-18 20:06:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:19,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:06:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:06:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:06:19,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:19,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486079672] [2022-11-18 20:06:19,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486079672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:19,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:19,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:19,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338615226] [2022-11-18 20:06:19,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:19,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:19,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:19,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:19,929 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) [2022-11-18 20:06:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:19,979 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2022-11-18 20:06:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:19,981 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 [2022-11-18 20:06:19,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:19,987 INFO L225 Difference]: With dead ends: 76 [2022-11-18 20:06:19,988 INFO L226 Difference]: Without dead ends: 71 [2022-11-18 20:06:19,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:19,990 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 [2022-11-18 20:06:19,991 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] [2022-11-18 20:06:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-18 20:06:20,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2022-11-18 20:06:20,003 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) [2022-11-18 20:06:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2022-11-18 20:06:20,005 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2022-11-18 20:06:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:20,006 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2022-11-18 20:06:20,006 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) [2022-11-18 20:06:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2022-11-18 20:06:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:06:20,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:20,007 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] [2022-11-18 20:06:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:06:20,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:20,009 INFO L85 PathProgramCache]: Analyzing trace with hash -890218714, now seen corresponding path program 1 times [2022-11-18 20:06:20,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:20,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273073480] [2022-11-18 20:06:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:20,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:20,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:06:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:06:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:06:20,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:20,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273073480] [2022-11-18 20:06:20,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273073480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:20,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237788677] [2022-11-18 20:06:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:20,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:20,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:20,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:20,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:06:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:20,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:06:20,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:20,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:20,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237788677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:20,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:06:20,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-18 20:06:20,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677035071] [2022-11-18 20:06:20,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:20,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:06:20,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:20,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:06:20,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:06:20,453 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) [2022-11-18 20:06:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:20,656 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2022-11-18 20:06:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:06:20,657 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 [2022-11-18 20:06:20,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:20,658 INFO L225 Difference]: With dead ends: 111 [2022-11-18 20:06:20,671 INFO L226 Difference]: Without dead ends: 61 [2022-11-18 20:06:20,672 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 [2022-11-18 20:06:20,673 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:20,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 121 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:06:20,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-18 20:06:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-11-18 20:06:20,698 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) [2022-11-18 20:06:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-11-18 20:06:20,699 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2022-11-18 20:06:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:20,700 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-11-18 20:06:20,700 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) [2022-11-18 20:06:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-11-18 20:06:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:06:20,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:20,702 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] [2022-11-18 20:06:20,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:20,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:06:20,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:20,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:20,904 INFO L85 PathProgramCache]: Analyzing trace with hash 411319597, now seen corresponding path program 1 times [2022-11-18 20:06:20,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:20,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133485650] [2022-11-18 20:06:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:20,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:06:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:06:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:21,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:21,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133485650] [2022-11-18 20:06:21,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133485650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:21,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:21,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:21,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346755655] [2022-11-18 20:06:21,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:21,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:21,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:21,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:21,021 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) [2022-11-18 20:06:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:21,087 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-11-18 20:06:21,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:21,088 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 [2022-11-18 20:06:21,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:21,090 INFO L225 Difference]: With dead ends: 85 [2022-11-18 20:06:21,090 INFO L226 Difference]: Without dead ends: 80 [2022-11-18 20:06:21,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:21,101 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:21,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 150 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:06:21,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-18 20:06:21,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2022-11-18 20:06:21,110 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) [2022-11-18 20:06:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-11-18 20:06:21,118 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2022-11-18 20:06:21,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:21,118 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-11-18 20:06:21,119 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) [2022-11-18 20:06:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-11-18 20:06:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:06:21,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:21,125 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] [2022-11-18 20:06:21,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:06:21,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2120732165, now seen corresponding path program 1 times [2022-11-18 20:06:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:21,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774120605] [2022-11-18 20:06:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:21,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:06:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:06:21,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:21,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774120605] [2022-11-18 20:06:21,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774120605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:21,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:21,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:21,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243723014] [2022-11-18 20:06:21,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:21,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:21,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:21,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:21,312 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) [2022-11-18 20:06:21,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:21,364 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-11-18 20:06:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:21,364 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 [2022-11-18 20:06:21,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:21,368 INFO L225 Difference]: With dead ends: 85 [2022-11-18 20:06:21,368 INFO L226 Difference]: Without dead ends: 83 [2022-11-18 20:06:21,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:21,371 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 [2022-11-18 20:06:21,373 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] [2022-11-18 20:06:21,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-18 20:06:21,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2022-11-18 20:06:21,385 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) [2022-11-18 20:06:21,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2022-11-18 20:06:21,387 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2022-11-18 20:06:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:21,387 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2022-11-18 20:06:21,387 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) [2022-11-18 20:06:21,388 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2022-11-18 20:06:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 20:06:21,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:21,389 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] [2022-11-18 20:06:21,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:06:21,389 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:21,390 INFO L85 PathProgramCache]: Analyzing trace with hash 900334698, now seen corresponding path program 1 times [2022-11-18 20:06:21,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:21,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868032587] [2022-11-18 20:06:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:21,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:06:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:06:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 20:06:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:06:21,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:21,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868032587] [2022-11-18 20:06:21,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868032587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:21,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743619492] [2022-11-18 20:06:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:21,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:21,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:21,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:06:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:21,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:06:21,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:06:21,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:21,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743619492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:21,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:06:21,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-18 20:06:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069738269] [2022-11-18 20:06:21,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:06:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:06:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:06:21,730 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) [2022-11-18 20:06:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:21,860 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2022-11-18 20:06:21,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:06:21,861 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 [2022-11-18 20:06:21,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:21,862 INFO L225 Difference]: With dead ends: 141 [2022-11-18 20:06:21,862 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 20:06:21,863 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 [2022-11-18 20:06:21,864 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 [2022-11-18 20:06:21,864 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] [2022-11-18 20:06:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 20:06:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2022-11-18 20:06:21,880 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) [2022-11-18 20:06:21,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-11-18 20:06:21,886 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 39 [2022-11-18 20:06:21,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:21,887 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-11-18 20:06:21,887 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) [2022-11-18 20:06:21,887 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-11-18 20:06:21,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 20:06:21,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:21,888 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] [2022-11-18 20:06:21,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:22,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:22,096 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:22,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1330050266, now seen corresponding path program 1 times [2022-11-18 20:06:22,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:22,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937254537] [2022-11-18 20:06:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:22,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:22,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:06:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:06:22,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:22,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937254537] [2022-11-18 20:06:22,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937254537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:22,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478718230] [2022-11-18 20:06:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:22,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:22,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:22,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:22,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:06:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:22,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:06:22,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:22,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:22,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478718230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:22,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:22,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-18 20:06:22,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724138722] [2022-11-18 20:06:22,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:22,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:06:22,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:22,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:06:22,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:06:22,585 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) [2022-11-18 20:06:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:23,174 INFO L93 Difference]: Finished difference Result 202 states and 267 transitions. [2022-11-18 20:06:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:06:23,174 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 [2022-11-18 20:06:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:23,176 INFO L225 Difference]: With dead ends: 202 [2022-11-18 20:06:23,176 INFO L226 Difference]: Without dead ends: 137 [2022-11-18 20:06:23,177 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 [2022-11-18 20:06:23,178 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:23,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 495 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:06:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-18 20:06:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2022-11-18 20:06:23,202 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) [2022-11-18 20:06:23,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2022-11-18 20:06:23,205 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30 [2022-11-18 20:06:23,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:23,207 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2022-11-18 20:06:23,207 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) [2022-11-18 20:06:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2022-11-18 20:06:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:06:23,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:23,210 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] [2022-11-18 20:06:23,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:23,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:23,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:23,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1193456114, now seen corresponding path program 2 times [2022-11-18 20:06:23,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:23,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019294694] [2022-11-18 20:06:23,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:23,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:23,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:06:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:06:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:06:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:23,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019294694] [2022-11-18 20:06:23,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019294694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:23,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720580682] [2022-11-18 20:06:23,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:23,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:23,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:23,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:06:23,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:06:23,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:23,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:06:23,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:06:23,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:23,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720580682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:23,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:06:23,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:06:23,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145926949] [2022-11-18 20:06:23,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:23,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:23,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:23,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:06:23,666 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) [2022-11-18 20:06:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:23,709 INFO L93 Difference]: Finished difference Result 132 states and 170 transitions. [2022-11-18 20:06:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:23,710 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 [2022-11-18 20:06:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:23,711 INFO L225 Difference]: With dead ends: 132 [2022-11-18 20:06:23,711 INFO L226 Difference]: Without dead ends: 131 [2022-11-18 20:06:23,712 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 [2022-11-18 20:06:23,713 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 [2022-11-18 20:06:23,713 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] [2022-11-18 20:06:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-18 20:06:23,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2022-11-18 20:06:23,724 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) [2022-11-18 20:06:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2022-11-18 20:06:23,726 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42 [2022-11-18 20:06:23,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:23,726 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2022-11-18 20:06:23,727 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) [2022-11-18 20:06:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2022-11-18 20:06:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:06:23,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:23,728 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] [2022-11-18 20:06:23,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:23,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:06:23,934 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1657566201, now seen corresponding path program 1 times [2022-11-18 20:06:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:23,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358034219] [2022-11-18 20:06:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:23,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:06:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:06:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:06:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:24,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358034219] [2022-11-18 20:06:24,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358034219] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:24,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416234816] [2022-11-18 20:06:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:24,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:24,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:24,042 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:24,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:06:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:24,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:06:24,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:24,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:24,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416234816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:24,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:24,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 23 [2022-11-18 20:06:24,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222896904] [2022-11-18 20:06:24,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:24,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:06:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:24,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:06:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:06:24,560 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) [2022-11-18 20:06:25,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:25,259 INFO L93 Difference]: Finished difference Result 321 states and 421 transitions. [2022-11-18 20:06:25,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:06:25,260 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 [2022-11-18 20:06:25,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:25,261 INFO L225 Difference]: With dead ends: 321 [2022-11-18 20:06:25,261 INFO L226 Difference]: Without dead ends: 211 [2022-11-18 20:06:25,262 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 [2022-11-18 20:06:25,263 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 [2022-11-18 20:06:25,263 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] [2022-11-18 20:06:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-18 20:06:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 191. [2022-11-18 20:06:25,288 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) [2022-11-18 20:06:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 245 transitions. [2022-11-18 20:06:25,290 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 245 transitions. Word has length 43 [2022-11-18 20:06:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:25,290 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 245 transitions. [2022-11-18 20:06:25,291 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) [2022-11-18 20:06:25,291 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 245 transitions. [2022-11-18 20:06:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-18 20:06:25,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:25,293 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] [2022-11-18 20:06:25,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:25,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:06:25,499 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:25,500 INFO L85 PathProgramCache]: Analyzing trace with hash 767040008, now seen corresponding path program 1 times [2022-11-18 20:06:25,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:25,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383854898] [2022-11-18 20:06:25,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:25,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:25,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:06:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:25,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:06:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:06:25,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:25,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383854898] [2022-11-18 20:06:25,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383854898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922354146] [2022-11-18 20:06:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:25,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:25,622 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:25,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:06:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:25,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:06:25,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:26,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:26,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922354146] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:26,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:26,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 19] total 24 [2022-11-18 20:06:26,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041718632] [2022-11-18 20:06:26,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:26,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:06:26,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:06:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:06:26,372 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) [2022-11-18 20:06:27,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:27,136 INFO L93 Difference]: Finished difference Result 408 states and 525 transitions. [2022-11-18 20:06:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:06:27,137 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 [2022-11-18 20:06:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:27,138 INFO L225 Difference]: With dead ends: 408 [2022-11-18 20:06:27,138 INFO L226 Difference]: Without dead ends: 238 [2022-11-18 20:06:27,140 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 [2022-11-18 20:06:27,141 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 245 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:27,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 763 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:06:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-18 20:06:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 213. [2022-11-18 20:06:27,154 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) [2022-11-18 20:06:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 274 transitions. [2022-11-18 20:06:27,157 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 274 transitions. Word has length 60 [2022-11-18 20:06:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:27,158 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 274 transitions. [2022-11-18 20:06:27,158 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) [2022-11-18 20:06:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 274 transitions. [2022-11-18 20:06:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-18 20:06:27,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:27,159 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] [2022-11-18 20:06:27,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:27,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:06:27,365 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash 561795286, now seen corresponding path program 2 times [2022-11-18 20:06:27,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:27,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997846577] [2022-11-18 20:06:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:27,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:27,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:06:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:27,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:06:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:06:27,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:27,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997846577] [2022-11-18 20:06:27,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997846577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:27,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469204790] [2022-11-18 20:06:27,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:27,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:27,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:27,489 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:27,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:06:27,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:06:27,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:27,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:06:27,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:06:27,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:27,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469204790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:27,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:06:27,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:06:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481162528] [2022-11-18 20:06:27,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:27,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:27,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:27,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:27,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:06:27,599 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) [2022-11-18 20:06:27,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:27,632 INFO L93 Difference]: Finished difference Result 224 states and 287 transitions. [2022-11-18 20:06:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:27,633 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 [2022-11-18 20:06:27,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:27,635 INFO L225 Difference]: With dead ends: 224 [2022-11-18 20:06:27,635 INFO L226 Difference]: Without dead ends: 223 [2022-11-18 20:06:27,635 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 [2022-11-18 20:06:27,636 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 [2022-11-18 20:06:27,636 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] [2022-11-18 20:06:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-18 20:06:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2022-11-18 20:06:27,648 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) [2022-11-18 20:06:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 278 transitions. [2022-11-18 20:06:27,651 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 278 transitions. Word has length 60 [2022-11-18 20:06:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:27,651 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 278 transitions. [2022-11-18 20:06:27,651 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) [2022-11-18 20:06:27,652 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 278 transitions. [2022-11-18 20:06:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 20:06:27,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:27,653 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] [2022-11-18 20:06:27,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:27,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:06:27,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:27,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:27,859 INFO L85 PathProgramCache]: Analyzing trace with hash 235784779, now seen corresponding path program 1 times [2022-11-18 20:06:27,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:27,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623560551] [2022-11-18 20:06:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:27,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:27,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:06:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:27,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:06:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:06:28,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:28,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623560551] [2022-11-18 20:06:28,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623560551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:28,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644177705] [2022-11-18 20:06:28,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:28,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:28,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:28,003 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:28,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:06:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:28,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:06:28,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:06:28,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:06:28,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644177705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:28,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:28,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-11-18 20:06:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42601093] [2022-11-18 20:06:28,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:28,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:06:28,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:28,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:06:28,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:06:28,163 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) [2022-11-18 20:06:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:28,271 INFO L93 Difference]: Finished difference Result 238 states and 304 transitions. [2022-11-18 20:06:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:06:28,272 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 [2022-11-18 20:06:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:28,274 INFO L225 Difference]: With dead ends: 238 [2022-11-18 20:06:28,275 INFO L226 Difference]: Without dead ends: 237 [2022-11-18 20:06:28,277 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 [2022-11-18 20:06:28,278 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 [2022-11-18 20:06:28,278 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] [2022-11-18 20:06:28,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-18 20:06:28,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 217. [2022-11-18 20:06:28,298 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) [2022-11-18 20:06:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 277 transitions. [2022-11-18 20:06:28,301 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 277 transitions. Word has length 61 [2022-11-18 20:06:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:28,301 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 277 transitions. [2022-11-18 20:06:28,301 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) [2022-11-18 20:06:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 277 transitions. [2022-11-18 20:06:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:06:28,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:28,302 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] [2022-11-18 20:06:28,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:28,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:06:28,509 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1770853253, now seen corresponding path program 1 times [2022-11-18 20:06:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:28,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278245174] [2022-11-18 20:06:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:28,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:28,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:06:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:06:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-18 20:06:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:28,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278245174] [2022-11-18 20:06:28,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278245174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:28,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:28,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:28,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692347536] [2022-11-18 20:06:28,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:28,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:28,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:28,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:28,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:28,640 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) [2022-11-18 20:06:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:28,682 INFO L93 Difference]: Finished difference Result 230 states and 290 transitions. [2022-11-18 20:06:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:28,683 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 [2022-11-18 20:06:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:28,686 INFO L225 Difference]: With dead ends: 230 [2022-11-18 20:06:28,687 INFO L226 Difference]: Without dead ends: 228 [2022-11-18 20:06:28,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:28,688 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 [2022-11-18 20:06:28,688 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] [2022-11-18 20:06:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-11-18 20:06:28,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 213. [2022-11-18 20:06:28,701 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) [2022-11-18 20:06:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 270 transitions. [2022-11-18 20:06:28,704 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 270 transitions. Word has length 67 [2022-11-18 20:06:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:28,705 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 270 transitions. [2022-11-18 20:06:28,705 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) [2022-11-18 20:06:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 270 transitions. [2022-11-18 20:06:28,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 20:06:28,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:28,707 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] [2022-11-18 20:06:28,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:06:28,707 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:28,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1824486331, now seen corresponding path program 1 times [2022-11-18 20:06:28,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:28,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728352918] [2022-11-18 20:06:28,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:28,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:28,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:06:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:06:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:29,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:06:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 57 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:06:29,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:29,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728352918] [2022-11-18 20:06:29,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728352918] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:29,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498424023] [2022-11-18 20:06:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:29,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:29,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:29,051 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:29,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:06:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:29,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:06:29,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:29,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:29,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498424023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:29,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:29,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 24 [2022-11-18 20:06:29,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218708952] [2022-11-18 20:06:29,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:29,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:06:29,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:06:29,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:06:29,564 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) [2022-11-18 20:06:30,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:30,365 INFO L93 Difference]: Finished difference Result 557 states and 751 transitions. [2022-11-18 20:06:30,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:06:30,366 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 [2022-11-18 20:06:30,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:30,368 INFO L225 Difference]: With dead ends: 557 [2022-11-18 20:06:30,368 INFO L226 Difference]: Without dead ends: 365 [2022-11-18 20:06:30,371 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 [2022-11-18 20:06:30,371 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 [2022-11-18 20:06:30,371 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] [2022-11-18 20:06:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-18 20:06:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 344. [2022-11-18 20:06:30,392 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) [2022-11-18 20:06:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 436 transitions. [2022-11-18 20:06:30,396 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 436 transitions. Word has length 80 [2022-11-18 20:06:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:30,396 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 436 transitions. [2022-11-18 20:06:30,396 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) [2022-11-18 20:06:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 436 transitions. [2022-11-18 20:06:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:06:30,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:30,398 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] [2022-11-18 20:06:30,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:30,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:06:30,603 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:30,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash 562828101, now seen corresponding path program 1 times [2022-11-18 20:06:30,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:30,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69675891] [2022-11-18 20:06:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:06:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:06:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 20:06:30,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:30,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69675891] [2022-11-18 20:06:30,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69675891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:30,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:30,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882121188] [2022-11-18 20:06:30,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:30,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:30,691 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) [2022-11-18 20:06:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:30,723 INFO L93 Difference]: Finished difference Result 356 states and 452 transitions. [2022-11-18 20:06:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:30,724 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 [2022-11-18 20:06:30,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:30,726 INFO L225 Difference]: With dead ends: 356 [2022-11-18 20:06:30,726 INFO L226 Difference]: Without dead ends: 355 [2022-11-18 20:06:30,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:30,727 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 [2022-11-18 20:06:30,728 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] [2022-11-18 20:06:30,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-18 20:06:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 343. [2022-11-18 20:06:30,747 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) [2022-11-18 20:06:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 435 transitions. [2022-11-18 20:06:30,750 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 435 transitions. Word has length 74 [2022-11-18 20:06:30,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:30,751 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 435 transitions. [2022-11-18 20:06:30,751 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) [2022-11-18 20:06:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 435 transitions. [2022-11-18 20:06:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:06:30,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:30,752 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] [2022-11-18 20:06:30,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:06:30,753 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:30,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:30,753 INFO L85 PathProgramCache]: Analyzing trace with hash 574690621, now seen corresponding path program 1 times [2022-11-18 20:06:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:30,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556254344] [2022-11-18 20:06:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:06:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:06:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-18 20:06:30,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:30,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556254344] [2022-11-18 20:06:30,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556254344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:30,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:30,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:06:30,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469574311] [2022-11-18 20:06:30,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:30,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:06:30,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:30,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:06:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:06:30,922 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) [2022-11-18 20:06:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:31,053 INFO L93 Difference]: Finished difference Result 414 states and 534 transitions. [2022-11-18 20:06:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:06:31,054 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 [2022-11-18 20:06:31,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:31,056 INFO L225 Difference]: With dead ends: 414 [2022-11-18 20:06:31,056 INFO L226 Difference]: Without dead ends: 413 [2022-11-18 20:06:31,057 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 [2022-11-18 20:06:31,057 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 [2022-11-18 20:06:31,058 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] [2022-11-18 20:06:31,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-18 20:06:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 375. [2022-11-18 20:06:31,079 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) [2022-11-18 20:06:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 484 transitions. [2022-11-18 20:06:31,082 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 484 transitions. Word has length 74 [2022-11-18 20:06:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:31,083 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 484 transitions. [2022-11-18 20:06:31,083 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) [2022-11-18 20:06:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 484 transitions. [2022-11-18 20:06:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-18 20:06:31,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:31,084 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] [2022-11-18 20:06:31,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:06:31,085 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash 635540138, now seen corresponding path program 1 times [2022-11-18 20:06:31,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:31,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892732840] [2022-11-18 20:06:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:31,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:06:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:06:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-18 20:06:31,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:31,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892732840] [2022-11-18 20:06:31,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892732840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:31,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:31,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451677100] [2022-11-18 20:06:31,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:31,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:31,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:31,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:31,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:31,173 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) [2022-11-18 20:06:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:31,218 INFO L93 Difference]: Finished difference Result 394 states and 509 transitions. [2022-11-18 20:06:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:31,218 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 [2022-11-18 20:06:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:31,221 INFO L225 Difference]: With dead ends: 394 [2022-11-18 20:06:31,221 INFO L226 Difference]: Without dead ends: 393 [2022-11-18 20:06:31,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:31,222 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 [2022-11-18 20:06:31,223 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] [2022-11-18 20:06:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-18 20:06:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 367. [2022-11-18 20:06:31,244 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) [2022-11-18 20:06:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 476 transitions. [2022-11-18 20:06:31,248 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 476 transitions. Word has length 75 [2022-11-18 20:06:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:31,248 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 476 transitions. [2022-11-18 20:06:31,249 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) [2022-11-18 20:06:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 476 transitions. [2022-11-18 20:06:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 20:06:31,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:31,250 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] [2022-11-18 20:06:31,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:06:31,250 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:31,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1451749056, now seen corresponding path program 1 times [2022-11-18 20:06:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:31,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560876443] [2022-11-18 20:06:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:06:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:06:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:06:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 52 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:06:31,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:31,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560876443] [2022-11-18 20:06:31,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560876443] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:31,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010516957] [2022-11-18 20:06:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:31,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:31,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:31,575 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:31,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:06:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:06:31,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 117 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:06:31,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:32,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010516957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:32,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:32,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 23 [2022-11-18 20:06:32,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346262334] [2022-11-18 20:06:32,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:32,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:06:32,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:06:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:06:32,077 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) [2022-11-18 20:06:32,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:32,770 INFO L93 Difference]: Finished difference Result 444 states and 553 transitions. [2022-11-18 20:06:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:06:32,771 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 [2022-11-18 20:06:32,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:32,773 INFO L225 Difference]: With dead ends: 444 [2022-11-18 20:06:32,774 INFO L226 Difference]: Without dead ends: 401 [2022-11-18 20:06:32,775 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 [2022-11-18 20:06:32,776 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 [2022-11-18 20:06:32,776 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] [2022-11-18 20:06:32,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-18 20:06:32,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 393. [2022-11-18 20:06:32,797 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) [2022-11-18 20:06:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 503 transitions. [2022-11-18 20:06:32,800 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 503 transitions. Word has length 85 [2022-11-18 20:06:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:32,801 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 503 transitions. [2022-11-18 20:06:32,801 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) [2022-11-18 20:06:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 503 transitions. [2022-11-18 20:06:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 20:06:32,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:32,802 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] [2022-11-18 20:06:32,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:33,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-18 20:06:33,008 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:33,008 INFO L85 PathProgramCache]: Analyzing trace with hash 338957823, now seen corresponding path program 1 times [2022-11-18 20:06:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:33,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891952126] [2022-11-18 20:06:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:33,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:06:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:33,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:33,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:33,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:06:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:06:33,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:33,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891952126] [2022-11-18 20:06:33,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891952126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:33,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515535128] [2022-11-18 20:06:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:33,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:33,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:33,385 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:33,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:06:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:33,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:06:33,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 33 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:06:33,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:06:33,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515535128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:33,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:33,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 24 [2022-11-18 20:06:33,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149565233] [2022-11-18 20:06:33,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:33,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:06:33,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:06:33,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:06:33,957 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) [2022-11-18 20:06:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:34,529 INFO L93 Difference]: Finished difference Result 752 states and 997 transitions. [2022-11-18 20:06:34,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:06:34,530 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 [2022-11-18 20:06:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:34,533 INFO L225 Difference]: With dead ends: 752 [2022-11-18 20:06:34,533 INFO L226 Difference]: Without dead ends: 420 [2022-11-18 20:06:34,536 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 [2022-11-18 20:06:34,538 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 [2022-11-18 20:06:34,538 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] [2022-11-18 20:06:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-18 20:06:34,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 397. [2022-11-18 20:06:34,558 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) [2022-11-18 20:06:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 502 transitions. [2022-11-18 20:06:34,562 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 502 transitions. Word has length 87 [2022-11-18 20:06:34,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:34,562 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 502 transitions. [2022-11-18 20:06:34,563 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) [2022-11-18 20:06:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 502 transitions. [2022-11-18 20:06:34,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 20:06:34,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:34,567 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] [2022-11-18 20:06:34,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:34,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:34,773 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:34,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1517976902, now seen corresponding path program 1 times [2022-11-18 20:06:34,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:34,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033311364] [2022-11-18 20:06:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:34,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:06:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:34,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:06:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:06:34,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:34,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033311364] [2022-11-18 20:06:34,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033311364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:34,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259449011] [2022-11-18 20:06:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:34,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:34,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:35,000 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:35,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:06:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:35,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:06:35,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:06:35,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:06:35,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259449011] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:35,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:35,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2022-11-18 20:06:35,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866429091] [2022-11-18 20:06:35,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:35,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:06:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:06:35,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:06:35,385 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) [2022-11-18 20:06:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:35,758 INFO L93 Difference]: Finished difference Result 734 states and 929 transitions. [2022-11-18 20:06:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:06:35,759 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 [2022-11-18 20:06:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:35,762 INFO L225 Difference]: With dead ends: 734 [2022-11-18 20:06:35,762 INFO L226 Difference]: Without dead ends: 407 [2022-11-18 20:06:35,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 178 SyntacticMatches, 12 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:06:35,766 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 [2022-11-18 20:06:35,767 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] [2022-11-18 20:06:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-11-18 20:06:35,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 397. [2022-11-18 20:06:35,788 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) [2022-11-18 20:06:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 499 transitions. [2022-11-18 20:06:35,791 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 499 transitions. Word has length 88 [2022-11-18 20:06:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:35,792 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 499 transitions. [2022-11-18 20:06:35,792 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) [2022-11-18 20:06:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 499 transitions. [2022-11-18 20:06:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 20:06:35,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:35,794 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] [2022-11-18 20:06:35,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:35,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:36,000 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:36,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1711008520, now seen corresponding path program 1 times [2022-11-18 20:06:36,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:36,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110482073] [2022-11-18 20:06:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:36,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:06:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:36,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:36,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:36,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:06:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:36,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:36,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:06:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 63 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:06:36,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:36,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110482073] [2022-11-18 20:06:36,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110482073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:36,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528323045] [2022-11-18 20:06:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:36,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:36,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:36,322 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:36,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:06:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:36,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:06:36,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-18 20:06:36,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:36,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528323045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:36,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:06:36,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19] total 29 [2022-11-18 20:06:36,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115883693] [2022-11-18 20:06:36,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:36,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:06:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:06:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:06:36,609 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) [2022-11-18 20:06:36,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:36,758 INFO L93 Difference]: Finished difference Result 558 states and 754 transitions. [2022-11-18 20:06:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:06:36,759 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 [2022-11-18 20:06:36,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:36,762 INFO L225 Difference]: With dead ends: 558 [2022-11-18 20:06:36,763 INFO L226 Difference]: Without dead ends: 557 [2022-11-18 20:06:36,764 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 [2022-11-18 20:06:36,764 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 [2022-11-18 20:06:36,764 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] [2022-11-18 20:06:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-18 20:06:36,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 470. [2022-11-18 20:06:36,791 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) [2022-11-18 20:06:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 627 transitions. [2022-11-18 20:06:36,795 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 627 transitions. Word has length 92 [2022-11-18 20:06:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:36,796 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 627 transitions. [2022-11-18 20:06:36,796 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) [2022-11-18 20:06:36,796 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 627 transitions. [2022-11-18 20:06:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:06:36,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:36,797 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] [2022-11-18 20:06:36,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-18 20:06:37,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:06:37,004 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:37,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1501656497, now seen corresponding path program 1 times [2022-11-18 20:06:37,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:37,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966990837] [2022-11-18 20:06:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:37,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:37,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:06:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:37,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:06:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:06:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 63 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 20:06:37,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:37,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966990837] [2022-11-18 20:06:37,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966990837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:37,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265289740] [2022-11-18 20:06:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:37,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:37,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:37,354 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:37,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:06:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:37,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:06:37,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:37,577 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-18 20:06:37,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-18 20:06:37,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265289740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:37,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:37,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8, 7] total 31 [2022-11-18 20:06:37,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162753953] [2022-11-18 20:06:37,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:37,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:06:37,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:37,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:06:37,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:06:37,843 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) [2022-11-18 20:06:39,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:39,757 INFO L93 Difference]: Finished difference Result 961 states and 1393 transitions. [2022-11-18 20:06:39,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 20:06:39,758 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 [2022-11-18 20:06:39,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:39,762 INFO L225 Difference]: With dead ends: 961 [2022-11-18 20:06:39,762 INFO L226 Difference]: Without dead ends: 552 [2022-11-18 20:06:39,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=755, Invalid=4501, Unknown=0, NotChecked=0, Total=5256 [2022-11-18 20:06:39,767 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 398 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:39,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 209 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:06:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-18 20:06:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 466. [2022-11-18 20:06:39,803 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) [2022-11-18 20:06:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 640 transitions. [2022-11-18 20:06:39,807 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 640 transitions. Word has length 93 [2022-11-18 20:06:39,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:39,807 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 640 transitions. [2022-11-18 20:06:39,808 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) [2022-11-18 20:06:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 640 transitions. [2022-11-18 20:06:39,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-18 20:06:39,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:39,811 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] [2022-11-18 20:06:39,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:40,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:06:40,017 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:40,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:40,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1769978552, now seen corresponding path program 1 times [2022-11-18 20:06:40,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:40,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447749642] [2022-11-18 20:06:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:40,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:06:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:06:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-18 20:06:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:40,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447749642] [2022-11-18 20:06:40,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447749642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:40,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761978693] [2022-11-18 20:06:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:40,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:40,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:40,370 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:40,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:06:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:40,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:06:40,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-18 20:06:40,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-18 20:06:41,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761978693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:41,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:41,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2022-11-18 20:06:41,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128160486] [2022-11-18 20:06:41,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:41,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:06:41,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:06:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:06:41,181 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) [2022-11-18 20:06:41,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:41,680 INFO L93 Difference]: Finished difference Result 712 states and 1014 transitions. [2022-11-18 20:06:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:06:41,681 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 [2022-11-18 20:06:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:41,685 INFO L225 Difference]: With dead ends: 712 [2022-11-18 20:06:41,686 INFO L226 Difference]: Without dead ends: 710 [2022-11-18 20:06:41,687 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 [2022-11-18 20:06:41,688 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 49 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:41,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 585 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:06:41,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-11-18 20:06:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 540. [2022-11-18 20:06:41,738 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) [2022-11-18 20:06:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 750 transitions. [2022-11-18 20:06:41,742 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 750 transitions. Word has length 107 [2022-11-18 20:06:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:41,743 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 750 transitions. [2022-11-18 20:06:41,744 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) [2022-11-18 20:06:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 750 transitions. [2022-11-18 20:06:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-18 20:06:41,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:41,745 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] [2022-11-18 20:06:41,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:41,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:06:41,952 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:41,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:41,952 INFO L85 PathProgramCache]: Analyzing trace with hash -965239639, now seen corresponding path program 1 times [2022-11-18 20:06:41,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:41,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908623749] [2022-11-18 20:06:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:41,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:06:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:42,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:42,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:42,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:06:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:42,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-18 20:06:42,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:42,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908623749] [2022-11-18 20:06:42,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908623749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:42,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636487889] [2022-11-18 20:06:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:42,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:42,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:42,284 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:42,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:06:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:42,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:06:42,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-18 20:06:42,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-18 20:06:43,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636487889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:43,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:43,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2022-11-18 20:06:43,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59481244] [2022-11-18 20:06:43,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:43,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:06:43,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:43,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:06:43,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:06:43,150 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) [2022-11-18 20:06:43,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:43,853 INFO L93 Difference]: Finished difference Result 1182 states and 1911 transitions. [2022-11-18 20:06:43,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:06:43,853 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 [2022-11-18 20:06:43,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:43,863 INFO L225 Difference]: With dead ends: 1182 [2022-11-18 20:06:43,863 INFO L226 Difference]: Without dead ends: 1173 [2022-11-18 20:06:43,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=369, Invalid=1983, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:06:43,866 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 76 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:43,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 538 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:06:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-11-18 20:06:43,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 776. [2022-11-18 20:06:43,929 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) [2022-11-18 20:06:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1215 transitions. [2022-11-18 20:06:43,950 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1215 transitions. Word has length 108 [2022-11-18 20:06:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:43,951 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 1215 transitions. [2022-11-18 20:06:43,951 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) [2022-11-18 20:06:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1215 transitions. [2022-11-18 20:06:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:06:43,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:43,953 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] [2022-11-18 20:06:43,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:44,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:06:44,159 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:44,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:44,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1978084040, now seen corresponding path program 1 times [2022-11-18 20:06:44,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:44,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102968188] [2022-11-18 20:06:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:44,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:06:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:06:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:06:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 66 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-18 20:06:44,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:44,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102968188] [2022-11-18 20:06:44,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102968188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:44,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696872106] [2022-11-18 20:06:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:44,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:44,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:44,511 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:44,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:06:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:44,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:06:44,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 66 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-18 20:06:44,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 66 proven. 114 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-18 20:06:45,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696872106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:45,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:45,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 20 [2022-11-18 20:06:45,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756132582] [2022-11-18 20:06:45,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:45,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:06:45,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:45,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:06:45,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:06:45,029 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) [2022-11-18 20:06:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:45,535 INFO L93 Difference]: Finished difference Result 1683 states and 2681 transitions. [2022-11-18 20:06:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:06:45,536 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 [2022-11-18 20:06:45,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:45,545 INFO L225 Difference]: With dead ends: 1683 [2022-11-18 20:06:45,546 INFO L226 Difference]: Without dead ends: 915 [2022-11-18 20:06:45,551 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 [2022-11-18 20:06:45,552 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 [2022-11-18 20:06:45,552 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] [2022-11-18 20:06:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-11-18 20:06:45,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 875. [2022-11-18 20:06:45,618 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) [2022-11-18 20:06:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1377 transitions. [2022-11-18 20:06:45,625 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1377 transitions. Word has length 141 [2022-11-18 20:06:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:45,625 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1377 transitions. [2022-11-18 20:06:45,625 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) [2022-11-18 20:06:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1377 transitions. [2022-11-18 20:06:45,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 20:06:45,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:45,628 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:45,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:45,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 20:06:45,834 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:45,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:45,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1535477056, now seen corresponding path program 2 times [2022-11-18 20:06:45,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:45,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547423455] [2022-11-18 20:06:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:45,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:06:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:06:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:06:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:06:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 101 proven. 120 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-18 20:06:46,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:46,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547423455] [2022-11-18 20:06:46,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547423455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:46,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496706861] [2022-11-18 20:06:46,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:46,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:46,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:46,224 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:46,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:06:46,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:06:46,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:46,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:06:46,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 127 proven. 124 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-18 20:06:46,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:47,034 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 127 proven. 125 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-18 20:06:47,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496706861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:47,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:47,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 25 [2022-11-18 20:06:47,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578184595] [2022-11-18 20:06:47,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:47,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:06:47,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:47,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:06:47,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:06:47,037 INFO L87 Difference]: Start difference. First operand 875 states and 1377 transitions. Second operand has 25 states, 24 states have (on average 4.916666666666667) internal successors, (118), 21 states have internal predecessors, (118), 13 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-18 20:06:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:47,844 INFO L93 Difference]: Finished difference Result 1687 states and 3005 transitions. [2022-11-18 20:06:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:06:47,844 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.916666666666667) internal successors, (118), 21 states have internal predecessors, (118), 13 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) Word has length 160 [2022-11-18 20:06:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:47,851 INFO L225 Difference]: With dead ends: 1687 [2022-11-18 20:06:47,852 INFO L226 Difference]: Without dead ends: 882 [2022-11-18 20:06:47,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 332 SyntacticMatches, 12 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=279, Invalid=1443, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:06:47,860 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 264 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:47,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 302 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:06:47,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-18 20:06:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 832. [2022-11-18 20:06:47,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 656 states have (on average 1.076219512195122) internal successors, (706), 649 states have internal predecessors, (706), 94 states have call successors, (94), 25 states have call predecessors, (94), 78 states have return successors, (485), 157 states have call predecessors, (485), 93 states have call successors, (485) [2022-11-18 20:06:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1285 transitions. [2022-11-18 20:06:47,929 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1285 transitions. Word has length 160 [2022-11-18 20:06:47,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:47,929 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1285 transitions. [2022-11-18 20:06:47,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.916666666666667) internal successors, (118), 21 states have internal predecessors, (118), 13 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-18 20:06:47,930 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1285 transitions. [2022-11-18 20:06:47,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-18 20:06:47,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:47,932 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] [2022-11-18 20:06:47,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:48,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:06:48,138 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:48,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:48,138 INFO L85 PathProgramCache]: Analyzing trace with hash -895052536, now seen corresponding path program 3 times [2022-11-18 20:06:48,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:48,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635843084] [2022-11-18 20:06:48,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:48,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:06:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:06:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:06:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 45 proven. 56 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-18 20:06:48,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:48,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635843084] [2022-11-18 20:06:48,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635843084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:48,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734933230] [2022-11-18 20:06:48,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:06:48,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:48,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:48,883 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:48,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:06:48,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-18 20:06:48,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:48,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:06:49,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 45 proven. 56 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-18 20:06:49,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 74 proven. 51 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-18 20:06:50,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734933230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:50,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:50,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2022-11-18 20:06:50,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450136179] [2022-11-18 20:06:50,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:50,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:06:50,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:50,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:06:50,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:06:50,714 INFO L87 Difference]: Start difference. First operand 832 states and 1285 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) [2022-11-18 20:06:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:51,427 INFO L93 Difference]: Finished difference Result 1534 states and 2651 transitions. [2022-11-18 20:06:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:06:51,428 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 [2022-11-18 20:06:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:51,442 INFO L225 Difference]: With dead ends: 1534 [2022-11-18 20:06:51,442 INFO L226 Difference]: Without dead ends: 1515 [2022-11-18 20:06:51,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 324 SyntacticMatches, 16 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=418, Invalid=2662, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:06:51,447 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:51,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 572 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:06:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-11-18 20:06:51,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1066. [2022-11-18 20:06:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 840 states have (on average 1.05) internal successors, (882), 831 states have internal predecessors, (882), 117 states have call successors, (117), 25 states have call predecessors, (117), 105 states have return successors, (793), 209 states have call predecessors, (793), 116 states have call successors, (793) [2022-11-18 20:06:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1792 transitions. [2022-11-18 20:06:51,573 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1792 transitions. Word has length 160 [2022-11-18 20:06:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:51,574 INFO L495 AbstractCegarLoop]: Abstraction has 1066 states and 1792 transitions. [2022-11-18 20:06:51,575 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) [2022-11-18 20:06:51,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1792 transitions. [2022-11-18 20:06:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-11-18 20:06:51,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:51,581 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 14, 14, 10, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 2, 1, 1, 1, 1, 1] [2022-11-18 20:06:51,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:51,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:51,786 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:51,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1508373836, now seen corresponding path program 2 times [2022-11-18 20:06:51,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:51,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281650265] [2022-11-18 20:06:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:51,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:06:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:06:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:06:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-18 20:06:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:06:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:06:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:06:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:06:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:06:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:06:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 290 proven. 240 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2022-11-18 20:06:52,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:52,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281650265] [2022-11-18 20:06:52,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281650265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:52,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634984724] [2022-11-18 20:06:52,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:06:52,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:52,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:52,415 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:52,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:06:52,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:06:52,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:52,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:06:52,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 835 proven. 179 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-11-18 20:06:52,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 107 proven. 459 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2022-11-18 20:06:53,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634984724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:53,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:53,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 17] total 35 [2022-11-18 20:06:53,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537796195] [2022-11-18 20:06:53,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:53,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:06:53,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:53,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:06:53,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:06:53,879 INFO L87 Difference]: Start difference. First operand 1066 states and 1792 transitions. Second operand has 35 states, 33 states have (on average 5.363636363636363) internal successors, (177), 29 states have internal predecessors, (177), 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) [2022-11-18 20:06:55,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:55,086 INFO L93 Difference]: Finished difference Result 2052 states and 3662 transitions. [2022-11-18 20:06:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:06:55,087 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 5.363636363636363) internal successors, (177), 29 states have internal predecessors, (177), 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 291 [2022-11-18 20:06:55,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:55,094 INFO L225 Difference]: With dead ends: 2052 [2022-11-18 20:06:55,094 INFO L226 Difference]: Without dead ends: 860 [2022-11-18 20:06:55,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 615 SyntacticMatches, 11 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=458, Invalid=3082, Unknown=0, NotChecked=0, Total=3540 [2022-11-18 20:06:55,108 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 418 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:55,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 739 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:06:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-11-18 20:06:55,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 797. [2022-11-18 20:06:55,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 630 states have (on average 1.0523809523809524) internal successors, (663), 622 states have internal predecessors, (663), 89 states have call successors, (89), 26 states have call predecessors, (89), 74 states have return successors, (327), 148 states have call predecessors, (327), 88 states have call successors, (327) [2022-11-18 20:06:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1079 transitions. [2022-11-18 20:06:55,201 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1079 transitions. Word has length 291 [2022-11-18 20:06:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:55,202 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1079 transitions. [2022-11-18 20:06:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 5.363636363636363) internal successors, (177), 29 states have internal predecessors, (177), 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) [2022-11-18 20:06:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1079 transitions. [2022-11-18 20:06:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-18 20:06:55,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:55,206 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 10, 10, 10, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 1, 1, 1, 1] [2022-11-18 20:06:55,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:55,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-18 20:06:55,413 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:55,413 INFO L85 PathProgramCache]: Analyzing trace with hash 348536252, now seen corresponding path program 3 times [2022-11-18 20:06:55,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:55,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430819709] [2022-11-18 20:06:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:55,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:06:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:06:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:06:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-18 20:06:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:06:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:06:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 225 proven. 167 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-18 20:06:55,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:55,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430819709] [2022-11-18 20:06:55,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430819709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:55,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416685941] [2022-11-18 20:06:55,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:06:55,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:55,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:55,891 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:55,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:06:56,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:06:56,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:56,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:06:56,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2022-11-18 20:06:56,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:56,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416685941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:56,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:06:56,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2022-11-18 20:06:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167908762] [2022-11-18 20:06:56,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:56,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:06:56,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:56,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:06:56,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:06:56,106 INFO L87 Difference]: Start difference. First operand 797 states and 1079 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:06:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:56,232 INFO L93 Difference]: Finished difference Result 1200 states and 1656 transitions. [2022-11-18 20:06:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:06:56,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 232 [2022-11-18 20:06:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:56,239 INFO L225 Difference]: With dead ends: 1200 [2022-11-18 20:06:56,239 INFO L226 Difference]: Without dead ends: 488 [2022-11-18 20:06:56,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:06:56,246 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:56,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:06:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-18 20:06:56,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2022-11-18 20:06:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 384 states have (on average 1.0416666666666667) internal successors, (400), 386 states have internal predecessors, (400), 60 states have call successors, (60), 26 states have call predecessors, (60), 42 states have return successors, (116), 75 states have call predecessors, (116), 59 states have call successors, (116) [2022-11-18 20:06:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 576 transitions. [2022-11-18 20:06:56,294 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 576 transitions. Word has length 232 [2022-11-18 20:06:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:56,295 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 576 transitions. [2022-11-18 20:06:56,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:06:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 576 transitions. [2022-11-18 20:06:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-18 20:06:56,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:56,301 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 13, 12, 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, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1] [2022-11-18 20:06:56,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:56,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:56,507 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:56,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1556162635, now seen corresponding path program 4 times [2022-11-18 20:06:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:56,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675302020] [2022-11-18 20:06:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:56,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:06:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:06:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:06:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-18 20:06:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:57,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:06:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:57,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:06:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:06:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:57,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 319 proven. 211 refuted. 0 times theorem prover too weak. 695 trivial. 0 not checked. [2022-11-18 20:06:57,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:57,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675302020] [2022-11-18 20:06:57,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675302020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:57,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130531245] [2022-11-18 20:06:57,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:06:57,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:57,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:57,090 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:57,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:06:57,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:06:57,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:06:57,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:06:57,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 303 proven. 210 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2022-11-18 20:06:57,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 303 proven. 216 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2022-11-18 20:06:58,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130531245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:58,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:58,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 17] total 27 [2022-11-18 20:06:58,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223006553] [2022-11-18 20:06:58,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:58,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:06:58,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:58,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:06:58,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:06:58,282 INFO L87 Difference]: Start difference. First operand 488 states and 576 transitions. Second operand has 27 states, 26 states have (on average 5.384615384615385) internal successors, (140), 24 states have internal predecessors, (140), 17 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (25), 12 states have call predecessors, (25), 14 states have call successors, (25) [2022-11-18 20:06:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:59,017 INFO L93 Difference]: Finished difference Result 965 states and 1202 transitions. [2022-11-18 20:06:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:06:59,018 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.384615384615385) internal successors, (140), 24 states have internal predecessors, (140), 17 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (25), 12 states have call predecessors, (25), 14 states have call successors, (25) Word has length 271 [2022-11-18 20:06:59,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:59,022 INFO L225 Difference]: With dead ends: 965 [2022-11-18 20:06:59,022 INFO L226 Difference]: Without dead ends: 538 [2022-11-18 20:06:59,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 577 SyntacticMatches, 11 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=1661, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:06:59,026 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 253 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:59,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 365 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:06:59,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-18 20:06:59,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 493. [2022-11-18 20:06:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 390 states have (on average 1.0333333333333334) internal successors, (403), 387 states have internal predecessors, (403), 58 states have call successors, (58), 29 states have call predecessors, (58), 43 states have return successors, (113), 76 states have call predecessors, (113), 57 states have call successors, (113) [2022-11-18 20:06:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 574 transitions. [2022-11-18 20:06:59,056 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 574 transitions. Word has length 271 [2022-11-18 20:06:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:59,057 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 574 transitions. [2022-11-18 20:06:59,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.384615384615385) internal successors, (140), 24 states have internal predecessors, (140), 17 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (25), 12 states have call predecessors, (25), 14 states have call successors, (25) [2022-11-18 20:06:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 574 transitions. [2022-11-18 20:06:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-18 20:06:59,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:59,061 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] [2022-11-18 20:06:59,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:59,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-18 20:06:59,266 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:06:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash 279369567, now seen corresponding path program 5 times [2022-11-18 20:06:59,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:59,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311736823] [2022-11-18 20:06:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:59,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:59,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:06:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-18 20:07:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 148 proven. 176 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-11-18 20:07:00,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:00,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311736823] [2022-11-18 20:07:00,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311736823] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:00,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118972256] [2022-11-18 20:07:00,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:07:00,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:00,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:00,686 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:00,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:07:00,848 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-18 20:07:00,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:00,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 20:07:00,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 148 proven. 176 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-11-18 20:07:01,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 218 proven. 155 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-11-18 20:07:04,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118972256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:04,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:04,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47 [2022-11-18 20:07:04,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028849936] [2022-11-18 20:07:04,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:04,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:07:04,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:04,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:07:04,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:07:04,682 INFO L87 Difference]: Start difference. First operand 493 states and 574 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) [2022-11-18 20:07:05,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:05,032 INFO L93 Difference]: Finished difference Result 565 states and 659 transitions. [2022-11-18 20:07:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:07:05,033 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 [2022-11-18 20:07:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:05,036 INFO L225 Difference]: With dead ends: 565 [2022-11-18 20:07:05,037 INFO L226 Difference]: Without dead ends: 559 [2022-11-18 20:07:05,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 520 SyntacticMatches, 33 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2288 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=371, Invalid=2491, Unknown=0, NotChecked=0, Total=2862 [2022-11-18 20:07:05,039 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 51 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:05,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 583 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:07:05,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-18 20:07:05,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 451. [2022-11-18 20:07:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 356 states have (on average 1.0280898876404494) internal successors, (366), 356 states have internal predecessors, (366), 54 states have call successors, (54), 29 states have call predecessors, (54), 39 states have return successors, (99), 65 states have call predecessors, (99), 53 states have call successors, (99) [2022-11-18 20:07:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 519 transitions. [2022-11-18 20:07:05,069 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 519 transitions. Word has length 252 [2022-11-18 20:07:05,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:05,070 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 519 transitions. [2022-11-18 20:07:05,070 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) [2022-11-18 20:07:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 519 transitions. [2022-11-18 20:07:05,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-11-18 20:07:05,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:05,077 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] [2022-11-18 20:07:05,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:05,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 20:07:05,283 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:07:05,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:05,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1439790170, now seen corresponding path program 4 times [2022-11-18 20:07:05,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:05,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970625524] [2022-11-18 20:07:05,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:05,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:07:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-11-18 20:07:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 263 proven. 550 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2022-11-18 20:07:06,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:06,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970625524] [2022-11-18 20:07:06,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970625524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:06,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29032292] [2022-11-18 20:07:06,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:07:06,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:06,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:06,082 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:06,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:07:06,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:07:06,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:06,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:07:06,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 1058 proven. 133 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-18 20:07:06,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1784 backedges. 233 proven. 354 refuted. 0 times theorem prover too weak. 1197 trivial. 0 not checked. [2022-11-18 20:07:07,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29032292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:07,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:07,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 15] total 28 [2022-11-18 20:07:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346874794] [2022-11-18 20:07:07,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:07,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:07:07,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:07,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:07:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:07:07,299 INFO L87 Difference]: Start difference. First operand 451 states and 519 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) [2022-11-18 20:07:08,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:08,061 INFO L93 Difference]: Finished difference Result 933 states and 1131 transitions. [2022-11-18 20:07:08,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:07:08,062 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 [2022-11-18 20:07:08,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:08,066 INFO L225 Difference]: With dead ends: 933 [2022-11-18 20:07:08,066 INFO L226 Difference]: Without dead ends: 529 [2022-11-18 20:07:08,069 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 [2022-11-18 20:07:08,070 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 318 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:08,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 403 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:07:08,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-11-18 20:07:08,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 489. [2022-11-18 20:07:08,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 387 states have (on average 1.0335917312661498) internal successors, (400), 386 states have internal predecessors, (400), 61 states have call successors, (61), 34 states have call predecessors, (61), 39 states have return successors, (95), 68 states have call predecessors, (95), 60 states have call successors, (95) [2022-11-18 20:07:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 556 transitions. [2022-11-18 20:07:08,105 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 556 transitions. Word has length 325 [2022-11-18 20:07:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:08,106 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 556 transitions. [2022-11-18 20:07:08,106 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) [2022-11-18 20:07:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 556 transitions. [2022-11-18 20:07:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-11-18 20:07:08,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:08,110 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 19, 18, 17, 16, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 6, 5, 2, 1, 1, 1, 1] [2022-11-18 20:07:08,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:08,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:08,317 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:07:08,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1849650954, now seen corresponding path program 5 times [2022-11-18 20:07:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:08,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123898928] [2022-11-18 20:07:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:07:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:07:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-18 20:07:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:08,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 457 proven. 251 refuted. 0 times theorem prover too weak. 1828 trivial. 0 not checked. [2022-11-18 20:07:09,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:09,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123898928] [2022-11-18 20:07:09,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123898928] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:09,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443087712] [2022-11-18 20:07:09,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:07:09,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:09,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:09,047 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:09,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 20:07:09,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-18 20:07:09,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:09,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:07:09,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 1403 proven. 332 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-11-18 20:07:09,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 359 proven. 688 refuted. 0 times theorem prover too weak. 1489 trivial. 0 not checked. [2022-11-18 20:07:11,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443087712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:11,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:11,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 19] total 35 [2022-11-18 20:07:11,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839614753] [2022-11-18 20:07:11,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:11,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:07:11,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:11,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:07:11,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:07:11,599 INFO L87 Difference]: Start difference. First operand 489 states and 556 transitions. Second operand has 35 states, 34 states have (on average 6.117647058823529) internal successors, (208), 33 states have internal predecessors, (208), 25 states have call successors, (38), 4 states have call predecessors, (38), 12 states have return successors, (40), 18 states have call predecessors, (40), 23 states have call successors, (40) [2022-11-18 20:07:12,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:12,898 INFO L93 Difference]: Finished difference Result 949 states and 1130 transitions. [2022-11-18 20:07:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:07:12,899 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 6.117647058823529) internal successors, (208), 33 states have internal predecessors, (208), 25 states have call successors, (38), 4 states have call predecessors, (38), 12 states have return successors, (40), 18 states have call predecessors, (40), 23 states have call successors, (40) Word has length 384 [2022-11-18 20:07:12,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:12,902 INFO L225 Difference]: With dead ends: 949 [2022-11-18 20:07:12,902 INFO L226 Difference]: Without dead ends: 478 [2022-11-18 20:07:12,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 817 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=414, Invalid=2448, Unknown=0, NotChecked=0, Total=2862 [2022-11-18 20:07:12,906 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 484 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:12,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 471 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:07:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-18 20:07:12,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 451. [2022-11-18 20:07:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 359 states have (on average 1.0362116991643453) internal successors, (372), 357 states have internal predecessors, (372), 56 states have call successors, (56), 37 states have call predecessors, (56), 34 states have return successors, (72), 56 states have call predecessors, (72), 55 states have call successors, (72) [2022-11-18 20:07:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 500 transitions. [2022-11-18 20:07:12,942 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 500 transitions. Word has length 384 [2022-11-18 20:07:12,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:12,942 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 500 transitions. [2022-11-18 20:07:12,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 6.117647058823529) internal successors, (208), 33 states have internal predecessors, (208), 25 states have call successors, (38), 4 states have call predecessors, (38), 12 states have return successors, (40), 18 states have call predecessors, (40), 23 states have call successors, (40) [2022-11-18 20:07:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 500 transitions. [2022-11-18 20:07:12,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-18 20:07:12,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:12,946 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] [2022-11-18 20:07:12,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:13,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:13,152 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:07:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1991199088, now seen corresponding path program 6 times [2022-11-18 20:07:13,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:13,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989595423] [2022-11-18 20:07:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:13,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:15,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:07:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-11-18 20:07:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 432 proven. 516 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2022-11-18 20:07:16,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:16,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989595423] [2022-11-18 20:07:16,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989595423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:16,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069877685] [2022-11-18 20:07:16,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:07:16,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:16,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:16,571 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:16,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 20:07:16,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-11-18 20:07:16,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:16,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-18 20:07:16,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 432 proven. 516 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2022-11-18 20:07:17,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 585 proven. 459 refuted. 0 times theorem prover too weak. 1749 trivial. 0 not checked. [2022-11-18 20:07:25,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069877685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:25,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:25,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 37] total 58 [2022-11-18 20:07:25,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963294279] [2022-11-18 20:07:25,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:25,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 20:07:25,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:25,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 20:07:25,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=3007, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 20:07:25,105 INFO L87 Difference]: Start difference. First operand 451 states and 500 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) [2022-11-18 20:07:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:25,545 INFO L93 Difference]: Finished difference Result 550 states and 615 transitions. [2022-11-18 20:07:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 20:07:25,546 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 [2022-11-18 20:07:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:25,549 INFO L225 Difference]: With dead ends: 550 [2022-11-18 20:07:25,549 INFO L226 Difference]: Without dead ends: 432 [2022-11-18 20:07:25,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 846 SyntacticMatches, 62 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4697 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=509, Invalid=3651, Unknown=0, NotChecked=0, Total=4160 [2022-11-18 20:07:25,551 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 76 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:25,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 639 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:07:25,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-18 20:07:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 345. [2022-11-18 20:07:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 275 states have (on average 1.0327272727272727) internal successors, (284), 273 states have internal predecessors, (284), 42 states have call successors, (42), 31 states have call predecessors, (42), 27 states have return successors, (46), 40 states have call predecessors, (46), 41 states have call successors, (46) [2022-11-18 20:07:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 372 transitions. [2022-11-18 20:07:25,578 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 372 transitions. Word has length 403 [2022-11-18 20:07:25,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:25,579 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 372 transitions. [2022-11-18 20:07:25,579 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) [2022-11-18 20:07:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 372 transitions. [2022-11-18 20:07:25,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2022-11-18 20:07:25,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:25,585 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 27, 26, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 11, 10, 7, 5, 1, 1, 1, 1] [2022-11-18 20:07:25,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:25,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 20:07:25,791 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:07:25,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:25,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1131487208, now seen corresponding path program 6 times [2022-11-18 20:07:25,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:25,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873162722] [2022-11-18 20:07:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:25,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:07:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:07:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-18 20:07:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 20:07:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-11-18 20:07:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:07:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:27,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:27,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7093 backedges. 1432 proven. 282 refuted. 0 times theorem prover too weak. 5379 trivial. 0 not checked. [2022-11-18 20:07:27,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:27,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873162722] [2022-11-18 20:07:27,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873162722] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:27,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121430051] [2022-11-18 20:07:27,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:07:27,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:27,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:27,031 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:27,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 20:07:27,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-18 20:07:27,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:27,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:07:27,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7093 backedges. 1322 proven. 107 refuted. 0 times theorem prover too weak. 5664 trivial. 0 not checked. [2022-11-18 20:07:27,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7093 backedges. 1322 proven. 113 refuted. 0 times theorem prover too weak. 5658 trivial. 0 not checked. [2022-11-18 20:07:29,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121430051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:29,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:29,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 15] total 32 [2022-11-18 20:07:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947176882] [2022-11-18 20:07:29,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:29,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:07:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:07:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:07:29,254 INFO L87 Difference]: Start difference. First operand 345 states and 372 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) [2022-11-18 20:07:29,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:29,938 INFO L93 Difference]: Finished difference Result 378 states and 404 transitions. [2022-11-18 20:07:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:07:29,939 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 633 [2022-11-18 20:07:29,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:29,941 INFO L225 Difference]: With dead ends: 378 [2022-11-18 20:07:29,941 INFO L226 Difference]: Without dead ends: 350 [2022-11-18 20:07:29,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1422 GetRequests, 1374 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=276, Invalid=1530, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:07:29,942 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 187 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:29,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 523 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:07:29,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-18 20:07:29,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 341. [2022-11-18 20:07:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 273 states have (on average 1.0256410256410255) internal successors, (280), 269 states have internal predecessors, (280), 41 states have call successors, (41), 32 states have call predecessors, (41), 26 states have return successors, (43), 39 states have call predecessors, (43), 40 states have call successors, (43) [2022-11-18 20:07:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 364 transitions. [2022-11-18 20:07:29,964 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 364 transitions. Word has length 633 [2022-11-18 20:07:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:29,965 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 364 transitions. [2022-11-18 20:07:29,965 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) [2022-11-18 20:07:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 364 transitions. [2022-11-18 20:07:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2022-11-18 20:07:29,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:29,970 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] [2022-11-18 20:07:29,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:30,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 20:07:30,177 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:07:30,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:30,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1217067304, now seen corresponding path program 7 times [2022-11-18 20:07:30,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:30,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059586987] [2022-11-18 20:07:30,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:30,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:07:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:34,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:07:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-18 20:07:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2022-11-18 20:07:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:07:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 1237 proven. 1424 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2022-11-18 20:07:36,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:36,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059586987] [2022-11-18 20:07:36,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059586987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:36,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268984106] [2022-11-18 20:07:36,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:07:36,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:36,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:36,611 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:36,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 20:07:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:37,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 133 conjunts are in the unsatisfiable core [2022-11-18 20:07:37,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 1237 proven. 1424 refuted. 0 times theorem prover too weak. 4877 trivial. 0 not checked. [2022-11-18 20:07:38,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 1543 proven. 1300 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2022-11-18 20:07:56,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268984106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:07:56,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:07:56,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 46] total 69 [2022-11-18 20:07:56,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384923745] [2022-11-18 20:07:56,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:56,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-18 20:07:56,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:56,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-18 20:07:56,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=4261, Unknown=0, NotChecked=0, Total=4830 [2022-11-18 20:07:56,174 INFO L87 Difference]: Start difference. First operand 341 states and 364 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) [2022-11-18 20:07:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:56,676 INFO L93 Difference]: Finished difference Result 414 states and 446 transitions. [2022-11-18 20:07:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 20:07:56,677 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 [2022-11-18 20:07:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:56,680 INFO L225 Difference]: With dead ends: 414 [2022-11-18 20:07:56,681 INFO L226 Difference]: Without dead ends: 355 [2022-11-18 20:07:56,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1574 GetRequests, 1388 SyntacticMatches, 111 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9090 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=684, Invalid=5168, Unknown=0, NotChecked=0, Total=5852 [2022-11-18 20:07:56,689 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 45 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:56,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1102 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:07:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-18 20:07:56,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 341. [2022-11-18 20:07:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 273 states have (on average 1.0256410256410255) internal successors, (280), 269 states have internal predecessors, (280), 41 states have call successors, (41), 32 states have call predecessors, (41), 26 states have return successors, (42), 39 states have call predecessors, (42), 40 states have call successors, (42) [2022-11-18 20:07:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 363 transitions. [2022-11-18 20:07:56,721 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 363 transitions. Word has length 652 [2022-11-18 20:07:56,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:56,721 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 363 transitions. [2022-11-18 20:07:56,722 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) [2022-11-18 20:07:56,722 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 363 transitions. [2022-11-18 20:07:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2022-11-18 20:07:56,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:56,728 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 34, 34, 29, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 12, 11, 8, 5, 1, 1, 1, 1] [2022-11-18 20:07:56,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:56,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-18 20:07:56,936 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-18 20:07:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1064865224, now seen corresponding path program 8 times [2022-11-18 20:07:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:56,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699899208] [2022-11-18 20:07:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:56,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:07:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:57,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:57,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:57,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:57,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:07:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-11-18 20:07:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:07:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2022-11-18 20:07:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 20:07:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-18 20:07:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:07:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:07:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:07:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8522 backedges. 555 proven. 2416 refuted. 0 times theorem prover too weak. 5551 trivial. 0 not checked. [2022-11-18 20:07:58,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:58,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699899208] [2022-11-18 20:07:58,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699899208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:58,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062949801] [2022-11-18 20:07:58,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:07:58,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:58,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:58,515 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:58,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 20:07:59,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:07:59,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:07:59,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:07:59,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8522 backedges. 4641 proven. 508 refuted. 0 times theorem prover too weak. 3373 trivial. 0 not checked. [2022-11-18 20:07:59,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8522 backedges. 521 proven. 1246 refuted. 0 times theorem prover too weak. 6755 trivial. 0 not checked. [2022-11-18 20:08:01,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062949801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:01,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:08:01,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 13, 17] total 40 [2022-11-18 20:08:01,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766126156] [2022-11-18 20:08:01,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:01,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 20:08:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:01,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 20:08:01,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:08:01,516 INFO L87 Difference]: Start difference. First operand 341 states and 363 transitions. Second operand has 40 states, 39 states have (on average 5.564102564102564) internal successors, (217), 39 states have internal predecessors, (217), 26 states have call successors, (39), 3 states have call predecessors, (39), 16 states have return successors, (50), 27 states have call predecessors, (50), 25 states have call successors, (50) [2022-11-18 20:08:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:02,395 INFO L93 Difference]: Finished difference Result 434 states and 464 transitions. [2022-11-18 20:08:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:08:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 5.564102564102564) internal successors, (217), 39 states have internal predecessors, (217), 26 states have call successors, (39), 3 states have call predecessors, (39), 16 states have return successors, (50), 27 states have call predecessors, (50), 25 states have call successors, (50) Word has length 692 [2022-11-18 20:08:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:02,397 INFO L225 Difference]: With dead ends: 434 [2022-11-18 20:08:02,397 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 20:08:02,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1504 SyntacticMatches, 9 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=596, Invalid=3436, Unknown=0, NotChecked=0, Total=4032 [2022-11-18 20:08:02,400 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 281 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:02,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 453 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:08:02,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 20:08:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 20:08:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 20:08:02,401 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 692 [2022-11-18 20:08:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:02,402 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 20:08:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 5.564102564102564) internal successors, (217), 39 states have internal predecessors, (217), 26 states have call successors, (39), 3 states have call predecessors, (39), 16 states have return successors, (50), 27 states have call predecessors, (50), 25 states have call successors, (50) [2022-11-18 20:08:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 20:08:02,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 20:08:02,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-18 20:08:02,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-18 20:08:02,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-18 20:08:02,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-18 20:08:02,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-18 20:08:02,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-18 20:08:02,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-11-18 20:08:02,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-11-18 20:08:02,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-18 20:08:02,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-18 20:08:02,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-18 20:08:02,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-18 20:08:02,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:02,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 20:08:02,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 20:08:11,049 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 20:08:11,050 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 20:08:11,050 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 20:08:11,050 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 20:08:11,050 INFO L895 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 8) [2022-11-18 20:08:11,050 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-11-18 20:08:11,050 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2022-11-18 20:08:11,050 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)) [2022-11-18 20:08:11,051 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2022-11-18 20:08:11,051 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2022-11-18 20:08:11,051 INFO L902 garLoopResultBuilder]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2022-11-18 20:08:11,051 INFO L899 garLoopResultBuilder]: For program point fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,051 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,051 INFO L899 garLoopResultBuilder]: For program point fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,051 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,051 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (and (or (< 1 fibo2_~n) (not (<= |fibo2_#in~n| 3))) (or (not (<= |fibo2_#in~n| 7)) (= fibo2_~n |fibo2_#in~n|))) [2022-11-18 20:08:11,052 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,052 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,052 INFO L899 garLoopResultBuilder]: For program point L25-5(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,052 INFO L895 garLoopResultBuilder]: At program point L25-6(line 25) the Hoare annotation is: (let ((.cse0 (not (<= |fibo2_#in~n| 7))) (.cse1 (not (<= |fibo2_#in~n| 5)))) (and (or .cse0 (and (= fibo2_~n |fibo2_#in~n|) (<= 1 |fibo2_#t~ret6|))) (or (< 1 fibo2_~n) (not (<= |fibo2_#in~n| 3))) (or .cse1 (<= |fibo2_#t~ret6| 3)) (or .cse0 (<= |fibo2_#t~ret6| 8)) (or .cse1 (<= |fibo2_#t~ret6| 1) (<= 5 fibo2_~n) (and (<= 4 fibo2_~n) (<= |fibo2_#t~ret6| 2))))) [2022-11-18 20:08:11,052 INFO L899 garLoopResultBuilder]: For program point L25-7(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,052 INFO L899 garLoopResultBuilder]: For program point L25-8(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,052 INFO L899 garLoopResultBuilder]: For program point L25-9(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,052 INFO L899 garLoopResultBuilder]: For program point fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,052 INFO L899 garLoopResultBuilder]: For program point fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L899 garLoopResultBuilder]: For program point fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L899 garLoopResultBuilder]: For program point fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L899 garLoopResultBuilder]: For program point fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L899 garLoopResultBuilder]: For program point fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,053 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (or (not (<= |fibo1_#in~n| 8)) (not (<= 8 |fibo1_#in~n|)) .cse0) (or .cse0 (not (<= |fibo1_#in~n| 6))) (not (<= |fibo1_#in~n| 1)))) [2022-11-18 20:08:11,054 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,054 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,054 INFO L899 garLoopResultBuilder]: For program point fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,054 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2022-11-18 20:08:11,054 INFO L899 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,054 INFO L895 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse0 (<= 2 |fibo1_#t~ret4|)) (.cse1 (= fibo1_~n |fibo1_#in~n|))) (and (or (and .cse0 (< |fibo1_#t~ret4| 2147483629) .cse1) (not (<= |fibo1_#in~n| 8)) (not (<= 8 |fibo1_#in~n|))) (or (not (<= |fibo1_#in~n| 4)) (and (= |fibo1_#t~ret4| 1) (< 1 fibo1_~n) (<= fibo1_~n 3) .cse1) (and (<= 4 |fibo1_#in~n|) .cse0 .cse1 (<= |fibo1_#t~ret4| 2))) (or (and (<= |fibo1_#t~ret4| 5) .cse0 .cse1) (not (<= 5 |fibo1_#in~n|)) (not (<= |fibo1_#in~n| 6))))) [2022-11-18 20:08:11,054 INFO L899 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,054 INFO L899 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,054 INFO L899 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,054 INFO L899 garLoopResultBuilder]: For program point fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,055 INFO L902 garLoopResultBuilder]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2022-11-18 20:08:11,055 INFO L899 garLoopResultBuilder]: For program point fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,055 INFO L899 garLoopResultBuilder]: For program point fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2022-11-18 20:08:11,055 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2022-11-18 20:08:11,055 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2022-11-18 20:08:11,055 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2022-11-18 20:08:11,059 INFO L444 BasicCegarLoop]: Path program histogram: [8, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:11,062 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:08:11,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:08:11 BoogieIcfgContainer [2022-11-18 20:08:11,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:08:11,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:08:11,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:08:11,077 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:08:11,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:18" (3/4) ... [2022-11-18 20:08:11,079 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:08:11,086 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2022-11-18 20:08:11,086 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2022-11-18 20:08:11,091 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-18 20:08:11,091 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 20:08:11,092 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:08:11,092 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:08:11,127 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:08:11,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:08:11,128 INFO L158 Benchmark]: Toolchain (without parser) took 113547.77ms. Allocated memory was 113.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 70.7MB in the beginning and 690.4MB in the end (delta: -619.6MB). Peak memory consumption was 760.1MB. Max. memory is 16.1GB. [2022-11-18 20:08:11,128 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:08:11,128 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.54ms. Allocated memory is still 113.2MB. Free memory was 70.5MB in the beginning and 88.4MB in the end (delta: -17.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:08:11,129 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.30ms. Allocated memory is still 113.2MB. Free memory was 88.4MB in the beginning and 87.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:08:11,129 INFO L158 Benchmark]: Boogie Preprocessor took 19.91ms. Allocated memory is still 113.2MB. Free memory was 87.2MB in the beginning and 86.3MB in the end (delta: 856.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:08:11,129 INFO L158 Benchmark]: RCFGBuilder took 355.76ms. Allocated memory is still 113.2MB. Free memory was 85.9MB in the beginning and 75.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:08:11,130 INFO L158 Benchmark]: TraceAbstraction took 112832.15ms. Allocated memory was 113.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 74.2MB in the beginning and 693.5MB in the end (delta: -619.3MB). Peak memory consumption was 900.9MB. Max. memory is 16.1GB. [2022-11-18 20:08:11,130 INFO L158 Benchmark]: Witness Printer took 50.98ms. Allocated memory is still 1.5GB. Free memory was 693.5MB in the beginning and 690.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:08:11,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.54ms. Allocated memory is still 113.2MB. Free memory was 70.5MB in the beginning and 88.4MB in the end (delta: -17.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.30ms. Allocated memory is still 113.2MB. Free memory was 88.4MB in the beginning and 87.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.91ms. Allocated memory is still 113.2MB. Free memory was 87.2MB in the beginning and 86.3MB in the end (delta: 856.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 355.76ms. Allocated memory is still 113.2MB. Free memory was 85.9MB in the beginning and 75.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 112832.15ms. Allocated memory was 113.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 74.2MB in the beginning and 693.5MB in the end (delta: -619.3MB). Peak memory consumption was 900.9MB. Max. memory is 16.1GB. * Witness Printer took 50.98ms. Allocated memory is still 1.5GB. Free memory was 693.5MB in the beginning and 690.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 112.7s, OverallIterations: 40, TraceHistogramMax: 37, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.1s, AutomataDifference: 18.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5479 SdHoareTripleChecker+Valid, 11.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5286 mSDsluCounter, 13947 SdHoareTripleChecker+Invalid, 9.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12164 mSDsCounter, 2224 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17672 IncrementalHoareTripleChecker+Invalid, 19896 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2224 mSolverCounterUnsat, 1783 mSDtfsCounter, 17672 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13029 GetRequests, 11525 SyntacticMatches, 396 SemanticMatches, 1108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26974 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1066occurred in iteration=30, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 40 MinimizatonAttempts, 1956 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 2360 PreInvPairs, 3914 NumberOfFragments, 179 HoareAnnotationTreeSize, 2360 FomulaSimplifications, 117223 FormulaSimplificationTreeSizeReduction, 6.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 30946 FormulaSimplificationTreeSizeReductionInter, 2.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 72.8s InterpolantComputationTime, 11799 NumberOfCodeBlocks, 11021 NumberOfCodeBlocksAsserted, 125 NumberOfCheckSat, 16913 ConstructedInterpolants, 0 QuantifiedInterpolants, 32096 SizeOfPredicates, 109 NumberOfNonLiveVariables, 9755 ConjunctsInSsa, 605 ConjunctsInUnsatCore, 92 InterpolantComputations, 17 PerfectInterpolantSequences, 94341/111216 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! [2022-11-18 20:08:11,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d578240-f897-45b9-aaab-192faca411c1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE