./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02dc726982da9e300f34803a4bdbb3c0165037d3f4471bd0e009c42cfb19ed24 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:08:53,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:08:53,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:08:53,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:08:53,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:08:53,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:08:53,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:08:53,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:08:53,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:08:53,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:08:53,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:08:53,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:08:53,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:08:53,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:08:53,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:08:53,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:08:53,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:08:53,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:08:53,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:08:53,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:08:53,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:08:53,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:08:53,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:08:53,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:08:53,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:08:53,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:08:53,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:08:53,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:08:53,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:08:53,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:08:53,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:08:53,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:08:53,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:08:53,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:08:53,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:08:53,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:08:53,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:08:53,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:08:53,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:08:53,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:08:53,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:08:53,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 18:08:53,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:08:53,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:08:53,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:08:53,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:08:53,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:08:53,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:08:53,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:08:53,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:08:53,231 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:08:53,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:08:53,232 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:08:53,232 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:08:53,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:08:53,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:08:53,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:08:53,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:08:53,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:08:53,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:08:53,233 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 18:08:53,233 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:08:53,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:08:53,233 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:08:53,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:08:53,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:08:53,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:08:53,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:08:53,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:08:53,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:08:53,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:08:53,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:08:53,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:08:53,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:08:53,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:08:53,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:08:53,235 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:08:53,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:08:53,235 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:08:53,235 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02dc726982da9e300f34803a4bdbb3c0165037d3f4471bd0e009c42cfb19ed24 [2022-12-13 18:08:53,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:08:53,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:08:53,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:08:53,425 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:08:53,425 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:08:53,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive-simple/fibo_5-2.c [2022-12-13 18:08:56,016 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:08:56,145 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:08:56,145 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/sv-benchmarks/c/recursive-simple/fibo_5-2.c [2022-12-13 18:08:56,149 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/data/f8d592757/f62be10293cf427c95c72784174c2ad2/FLAGdd7c74d71 [2022-12-13 18:08:56,160 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/data/f8d592757/f62be10293cf427c95c72784174c2ad2 [2022-12-13 18:08:56,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:08:56,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:08:56,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:08:56,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:08:56,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:08:56,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21be6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56, skipping insertion in model container [2022-12-13 18:08:56,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:08:56,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:08:56,288 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/sv-benchmarks/c/recursive-simple/fibo_5-2.c[740,753] [2022-12-13 18:08:56,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:08:56,297 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:08:56,310 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/sv-benchmarks/c/recursive-simple/fibo_5-2.c[740,753] [2022-12-13 18:08:56,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:08:56,321 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:08:56,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56 WrapperNode [2022-12-13 18:08:56,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:08:56,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:08:56,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:08:56,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:08:56,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,348 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-12-13 18:08:56,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:08:56,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:08:56,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:08:56,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:08:56,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,362 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:08:56,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:08:56,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:08:56,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:08:56,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (1/1) ... [2022-12-13 18:08:56,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:08:56,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:08:56,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:08:56,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:08:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:08:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:08:56,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:08:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:08:56,426 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-12-13 18:08:56,426 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-12-13 18:08:56,494 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:08:56,496 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:08:56,582 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:08:56,587 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:08:56,587 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:08:56,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:08:56 BoogieIcfgContainer [2022-12-13 18:08:56,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:08:56,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:08:56,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:08:56,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:08:56,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:08:56" (1/3) ... [2022-12-13 18:08:56,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f2909c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:08:56, skipping insertion in model container [2022-12-13 18:08:56,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:08:56" (2/3) ... [2022-12-13 18:08:56,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f2909c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:08:56, skipping insertion in model container [2022-12-13 18:08:56,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:08:56" (3/3) ... [2022-12-13 18:08:56,595 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2022-12-13 18:08:56,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:08:56,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 18:08:56,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:08:56,654 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;@1aa32026, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:08:56,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 18:08:56,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:08:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 18:08:56,663 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:08:56,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:08:56,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:08:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1840307469, now seen corresponding path program 1 times [2022-12-13 18:08:56,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:56,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958935227] [2022-12-13 18:08:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:56,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:08:56,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:56,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958935227] [2022-12-13 18:08:56,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958935227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:08:56,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:08:56,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:08:56,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524559665] [2022-12-13 18:08:56,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:08:56,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:08:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:56,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:08:56,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:08:56,849 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:08:56,894 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-12-13 18:08:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:08:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-13 18:08:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:08:56,903 INFO L225 Difference]: With dead ends: 37 [2022-12-13 18:08:56,904 INFO L226 Difference]: Without dead ends: 24 [2022-12-13 18:08:56,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:08:56,910 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:08:56,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:08:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-13 18:08:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-12-13 18:08:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:08:56,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-12-13 18:08:56,948 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2022-12-13 18:08:56,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:08:56,948 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-12-13 18:08:56,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-12-13 18:08:56,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 18:08:56,950 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:08:56,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:08:56,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:08:56,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:08:56,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1214956750, now seen corresponding path program 1 times [2022-12-13 18:08:56,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:56,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127959436] [2022-12-13 18:08:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:56,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:08:57,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:57,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127959436] [2022-12-13 18:08:57,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127959436] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:08:57,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:08:57,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:08:57,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905989764] [2022-12-13 18:08:57,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:08:57,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:08:57,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:57,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:08:57,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:08:57,022 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:08:57,064 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-12-13 18:08:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:08:57,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 18:08:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:08:57,065 INFO L225 Difference]: With dead ends: 22 [2022-12-13 18:08:57,065 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 18:08:57,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:08:57,067 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:08:57,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 24 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:08:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 18:08:57,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-13 18:08:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:08:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-12-13 18:08:57,073 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2022-12-13 18:08:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:08:57,073 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-12-13 18:08:57,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:08:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-12-13 18:08:57,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 18:08:57,075 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:08:57,075 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:08:57,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:08:57,075 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:08:57,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:57,076 INFO L85 PathProgramCache]: Analyzing trace with hash 199265907, now seen corresponding path program 1 times [2022-12-13 18:08:57,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:57,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826508531] [2022-12-13 18:08:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:57,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:08:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:57,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:08:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 18:08:57,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:57,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826508531] [2022-12-13 18:08:57,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826508531] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:08:57,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:08:57,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:08:57,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102729406] [2022-12-13 18:08:57,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:08:57,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:08:57,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:57,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:08:57,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:08:57,235 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:08:57,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:08:57,267 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-12-13 18:08:57,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:08:57,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-12-13 18:08:57,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:08:57,268 INFO L225 Difference]: With dead ends: 36 [2022-12-13 18:08:57,269 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 18:08:57,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:08:57,270 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:08:57,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 51 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:08:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 18:08:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-12-13 18:08:57,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:08:57,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-12-13 18:08:57,276 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2022-12-13 18:08:57,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:08:57,276 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-12-13 18:08:57,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:08:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-12-13 18:08:57,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 18:08:57,278 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:08:57,278 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:08:57,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:08:57,278 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:08:57,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1894113426, now seen corresponding path program 1 times [2022-12-13 18:08:57,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:57,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071865999] [2022-12-13 18:08:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:08:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:08:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 18:08:57,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:57,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071865999] [2022-12-13 18:08:57,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071865999] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:08:57,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299325468] [2022-12-13 18:08:57,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:57,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:08:57,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:08:57,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:08:57,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:08:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:57,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:08:57,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:08:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:08:57,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:08:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:08:57,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299325468] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:08:57,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:08:57,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-12-13 18:08:57,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519104453] [2022-12-13 18:08:57,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:08:57,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 18:08:57,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 18:08:57,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:08:57,686 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 18:08:58,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:08:58,086 INFO L93 Difference]: Finished difference Result 178 states and 248 transitions. [2022-12-13 18:08:58,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:08:58,086 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2022-12-13 18:08:58,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:08:58,088 INFO L225 Difference]: With dead ends: 178 [2022-12-13 18:08:58,088 INFO L226 Difference]: Without dead ends: 145 [2022-12-13 18:08:58,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:08:58,091 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 195 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:08:58,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 258 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:08:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-12-13 18:08:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 129. [2022-12-13 18:08:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 100 states have (on average 1.11) internal successors, (111), 102 states have internal predecessors, (111), 17 states have call successors, (17), 5 states have call predecessors, (17), 10 states have return successors, (46), 21 states have call predecessors, (46), 16 states have call successors, (46) [2022-12-13 18:08:58,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2022-12-13 18:08:58,116 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 30 [2022-12-13 18:08:58,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:08:58,116 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2022-12-13 18:08:58,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 18:08:58,116 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2022-12-13 18:08:58,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 18:08:58,122 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:08:58,122 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:08:58,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:08:58,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:08:58,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:08:58,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:58,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1184531600, now seen corresponding path program 2 times [2022-12-13 18:08:58,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:58,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937232085] [2022-12-13 18:08:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:58,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:58,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 18:08:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:08:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-13 18:08:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:58,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937232085] [2022-12-13 18:08:58,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937232085] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:08:58,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4479574] [2022-12-13 18:08:58,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:08:58,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:08:58,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:08:58,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:08:58,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:08:58,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:08:58,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:08:58,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:08:58,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:08:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-13 18:08:58,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:08:58,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4479574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:08:58,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:08:58,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-12-13 18:08:58,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133890598] [2022-12-13 18:08:58,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:08:58,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:08:58,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:58,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:08:58,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:08:58,559 INFO L87 Difference]: Start difference. First operand 129 states and 174 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:08:58,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:08:58,585 INFO L93 Difference]: Finished difference Result 153 states and 210 transitions. [2022-12-13 18:08:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:08:58,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-12-13 18:08:58,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:08:58,588 INFO L225 Difference]: With dead ends: 153 [2022-12-13 18:08:58,588 INFO L226 Difference]: Without dead ends: 152 [2022-12-13 18:08:58,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:08:58,589 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:08:58,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 59 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:08:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-13 18:08:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 137. [2022-12-13 18:08:58,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 107 states have (on average 1.102803738317757) internal successors, (118), 107 states have internal predecessors, (118), 17 states have call successors, (17), 5 states have call predecessors, (17), 11 states have return successors, (55), 24 states have call predecessors, (55), 16 states have call successors, (55) [2022-12-13 18:08:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 190 transitions. [2022-12-13 18:08:58,611 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 190 transitions. Word has length 42 [2022-12-13 18:08:58,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:08:58,612 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 190 transitions. [2022-12-13 18:08:58,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:08:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 190 transitions. [2022-12-13 18:08:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 18:08:58,613 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:08:58,613 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:08:58,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:08:58,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:08:58,814 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:08:58,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:58,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1934226135, now seen corresponding path program 1 times [2022-12-13 18:08:58,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:58,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059847064] [2022-12-13 18:08:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:58,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 18:08:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:08:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-13 18:08:58,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:58,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059847064] [2022-12-13 18:08:58,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059847064] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:08:58,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653190912] [2022-12-13 18:08:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:58,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:08:58,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:08:58,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:08:58,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:08:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:58,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 18:08:58,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:08:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-13 18:08:58,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:08:58,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653190912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:08:58,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:08:58,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-12-13 18:08:58,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938708155] [2022-12-13 18:08:58,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:08:58,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:08:58,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:58,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:08:58,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:08:58,987 INFO L87 Difference]: Start difference. First operand 137 states and 190 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:08:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:08:59,023 INFO L93 Difference]: Finished difference Result 208 states and 326 transitions. [2022-12-13 18:08:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:08:59,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-12-13 18:08:59,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:08:59,026 INFO L225 Difference]: With dead ends: 208 [2022-12-13 18:08:59,026 INFO L226 Difference]: Without dead ends: 207 [2022-12-13 18:08:59,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:08:59,028 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:08:59,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:08:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-12-13 18:08:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 153. [2022-12-13 18:08:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 120 states have (on average 1.0916666666666666) internal successors, (131), 119 states have internal predecessors, (131), 19 states have call successors, (19), 5 states have call predecessors, (19), 12 states have return successors, (76), 28 states have call predecessors, (76), 18 states have call successors, (76) [2022-12-13 18:08:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 226 transitions. [2022-12-13 18:08:59,057 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 226 transitions. Word has length 43 [2022-12-13 18:08:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:08:59,058 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 226 transitions. [2022-12-13 18:08:59,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:08:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 226 transitions. [2022-12-13 18:08:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 18:08:59,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:08:59,059 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:08:59,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:08:59,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:08:59,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:08:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:59,261 INFO L85 PathProgramCache]: Analyzing trace with hash 198431666, now seen corresponding path program 1 times [2022-12-13 18:08:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:59,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305812781] [2022-12-13 18:08:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:59,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:59,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 18:08:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:08:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-12-13 18:08:59,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:59,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305812781] [2022-12-13 18:08:59,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305812781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:08:59,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:08:59,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:08:59,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829495713] [2022-12-13 18:08:59,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:08:59,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:08:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:08:59,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:08:59,395 INFO L87 Difference]: Start difference. First operand 153 states and 226 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:08:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:08:59,430 INFO L93 Difference]: Finished difference Result 182 states and 270 transitions. [2022-12-13 18:08:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:08:59,431 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 44 [2022-12-13 18:08:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:08:59,433 INFO L225 Difference]: With dead ends: 182 [2022-12-13 18:08:59,433 INFO L226 Difference]: Without dead ends: 181 [2022-12-13 18:08:59,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:08:59,434 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:08:59,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 62 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:08:59,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-12-13 18:08:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 164. [2022-12-13 18:08:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 129 states have (on average 1.0852713178294573) internal successors, (140), 127 states have internal predecessors, (140), 21 states have call successors, (21), 5 states have call predecessors, (21), 12 states have return successors, (88), 31 states have call predecessors, (88), 20 states have call successors, (88) [2022-12-13 18:08:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 249 transitions. [2022-12-13 18:08:59,454 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 249 transitions. Word has length 44 [2022-12-13 18:08:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:08:59,455 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 249 transitions. [2022-12-13 18:08:59,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:08:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 249 transitions. [2022-12-13 18:08:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 18:08:59,457 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:08:59,457 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:08:59,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:08:59,457 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:08:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:08:59,458 INFO L85 PathProgramCache]: Analyzing trace with hash 112113413, now seen corresponding path program 1 times [2022-12-13 18:08:59,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:08:59,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518968742] [2022-12-13 18:08:59,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:59,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:08:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:59,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 18:08:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:59,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:08:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 18:08:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:59,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:08:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-13 18:08:59,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:08:59,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518968742] [2022-12-13 18:08:59,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518968742] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:08:59,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474077078] [2022-12-13 18:08:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:08:59,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:08:59,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:08:59,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:08:59,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:08:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:08:59,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 18:08:59,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:08:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 46 proven. 63 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:08:59,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:08:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 46 proven. 63 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:08:59,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474077078] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:08:59,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:08:59,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 17 [2022-12-13 18:08:59,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741891096] [2022-12-13 18:08:59,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:08:59,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:08:59,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:08:59,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:08:59,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:08:59,829 INFO L87 Difference]: Start difference. First operand 164 states and 249 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 18:09:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:00,146 INFO L93 Difference]: Finished difference Result 295 states and 467 transitions. [2022-12-13 18:09:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 18:09:00,146 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2022-12-13 18:09:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:00,148 INFO L225 Difference]: With dead ends: 295 [2022-12-13 18:09:00,148 INFO L226 Difference]: Without dead ends: 146 [2022-12-13 18:09:00,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 112 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:09:00,153 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 188 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:00,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 86 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:09:00,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-13 18:09:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2022-12-13 18:09:00,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 98 states have internal predecessors, (103), 16 states have call successors, (16), 5 states have call predecessors, (16), 10 states have return successors, (30), 20 states have call predecessors, (30), 15 states have call successors, (30) [2022-12-13 18:09:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2022-12-13 18:09:00,165 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 62 [2022-12-13 18:09:00,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:00,165 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2022-12-13 18:09:00,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 18:09:00,166 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2022-12-13 18:09:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 18:09:00,167 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:00,167 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 18:09:00,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:09:00,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:09:00,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:09:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash -875256650, now seen corresponding path program 1 times [2022-12-13 18:09:00,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:00,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130694023] [2022-12-13 18:09:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:00,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 18:09:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:00,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 18:09:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:09:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:00,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:09:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 18:09:00,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:09:00,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130694023] [2022-12-13 18:09:00,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130694023] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:09:00,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282044551] [2022-12-13 18:09:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:00,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:09:00,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:09:00,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:09:00,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:09:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:00,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:09:00,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-12-13 18:09:00,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:09:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 18:09:00,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282044551] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:09:00,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:09:00,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2022-12-13 18:09:00,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207615510] [2022-12-13 18:09:00,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:09:00,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:09:00,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:09:00,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:09:00,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:09:00,715 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:09:00,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:00,784 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2022-12-13 18:09:00,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:09:00,784 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 57 [2022-12-13 18:09:00,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:00,786 INFO L225 Difference]: With dead ends: 128 [2022-12-13 18:09:00,786 INFO L226 Difference]: Without dead ends: 127 [2022-12-13 18:09:00,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:09:00,787 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:00,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:09:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-13 18:09:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 124. [2022-12-13 18:09:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 98 states have internal predecessors, (101), 16 states have call successors, (16), 5 states have call predecessors, (16), 10 states have return successors, (30), 20 states have call predecessors, (30), 15 states have call successors, (30) [2022-12-13 18:09:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2022-12-13 18:09:00,794 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 57 [2022-12-13 18:09:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:00,795 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2022-12-13 18:09:00,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:09:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2022-12-13 18:09:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 18:09:00,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:00,796 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-13 18:09:00,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:09:00,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:09:00,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:09:00,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:00,998 INFO L85 PathProgramCache]: Analyzing trace with hash 603319935, now seen corresponding path program 2 times [2022-12-13 18:09:00,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:00,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506047857] [2022-12-13 18:09:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 18:09:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:01,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 18:09:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:09:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:01,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:09:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:01,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 18:09:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:09:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 51 proven. 73 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 18:09:01,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:09:01,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506047857] [2022-12-13 18:09:01,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506047857] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:09:01,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862542881] [2022-12-13 18:09:01,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:09:01,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:09:01,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:09:01,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:09:01,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:09:01,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:09:01,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:09:01,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:09:01,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-13 18:09:01,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:09:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-12-13 18:09:01,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862542881] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:09:01,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:09:01,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 5] total 21 [2022-12-13 18:09:01,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697910047] [2022-12-13 18:09:01,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:09:01,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 18:09:01,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:09:01,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 18:09:01,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:09:01,500 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand has 21 states, 20 states have (on average 3.5) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 18:09:02,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:02,018 INFO L93 Difference]: Finished difference Result 234 states and 286 transitions. [2022-12-13 18:09:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 18:09:02,019 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2022-12-13 18:09:02,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:02,020 INFO L225 Difference]: With dead ends: 234 [2022-12-13 18:09:02,020 INFO L226 Difference]: Without dead ends: 125 [2022-12-13 18:09:02,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=552, Invalid=1704, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 18:09:02,023 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 222 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:02,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 47 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:09:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-13 18:09:02,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 81. [2022-12-13 18:09:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 65 states have internal predecessors, (65), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2022-12-13 18:09:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2022-12-13 18:09:02,029 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 75 [2022-12-13 18:09:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:02,029 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2022-12-13 18:09:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2022-12-13 18:09:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2022-12-13 18:09:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 18:09:02,030 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:09:02,030 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2022-12-13 18:09:02,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:09:02,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 18:09:02,232 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 18:09:02,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:09:02,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1686121313, now seen corresponding path program 2 times [2022-12-13 18:09:02,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:09:02,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869112503] [2022-12-13 18:09:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:09:02,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:09:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:09:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 18:09:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 18:09:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 18:09:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:09:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:09:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:09:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 18:09:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:09:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 18:09:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 18:09:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-12-13 18:09:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:09:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:09:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:09:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-12-13 18:09:02,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:09:02,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869112503] [2022-12-13 18:09:02,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869112503] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:09:02,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681662280] [2022-12-13 18:09:02,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:09:02,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:09:02,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:09:02,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:09:02,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:09:02,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:09:02,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:09:02,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 18:09:02,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:09:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-12-13 18:09:03,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:09:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 18:09:03,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681662280] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:09:03,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:09:03,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2022-12-13 18:09:03,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69553294] [2022-12-13 18:09:03,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:09:03,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 18:09:03,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:09:03,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 18:09:03,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:09:03,983 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-13 18:09:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:09:04,018 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2022-12-13 18:09:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 18:09:04,018 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 143 [2022-12-13 18:09:04,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:09:04,019 INFO L225 Difference]: With dead ends: 81 [2022-12-13 18:09:04,019 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 18:09:04,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 300 SyntacticMatches, 16 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:09:04,020 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:09:04,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:09:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 18:09:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 18:09:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:09:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 18:09:04,021 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2022-12-13 18:09:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:09:04,022 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 18:09:04,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2022-12-13 18:09:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 18:09:04,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 18:09:04,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-12-13 18:09:04,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-12-13 18:09:04,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-12-13 18:09:04,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-12-13 18:09:04,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-12-13 18:09:04,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-12-13 18:09:04,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:09:04,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 18:09:04,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 18:09:04,608 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 18:09:04,608 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 18:09:04,608 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-12-13 18:09:04,608 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 18:09:04,608 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2022-12-13 18:09:04,608 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= 5 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 5)) [2022-12-13 18:09:04,609 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-12-13 18:09:04,609 INFO L899 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2022-12-13 18:09:04,609 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 18:09:04,609 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 25 32) the Hoare annotation is: true [2022-12-13 18:09:04,609 INFO L899 garLoopResultBuilder]: For program point fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,609 INFO L899 garLoopResultBuilder]: For program point fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,609 INFO L899 garLoopResultBuilder]: For program point fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,609 INFO L899 garLoopResultBuilder]: For program point fiboFINAL(lines 7 15) no Hoare annotation was computed. [2022-12-13 18:09:04,609 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,609 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,610 INFO L895 garLoopResultBuilder]: At program point L13-2(line 13) the Hoare annotation is: (and (or (= fibo_~n |fibo_#in~n|) (not (<= |fibo_#in~n| 5))) (or (< 1 fibo_~n) (not (<= |fibo_#in~n| 2)))) [2022-12-13 18:09:04,610 INFO L899 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,610 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 15) the Hoare annotation is: true [2022-12-13 18:09:04,610 INFO L899 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,610 INFO L899 garLoopResultBuilder]: For program point L13-5(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,610 INFO L895 garLoopResultBuilder]: At program point L13-6(line 13) the Hoare annotation is: (and (or (not (<= |fibo_#in~n| 4)) (<= |fibo_#t~ret4| 2)) (or (not (<= fibo_~n 1)) (not (<= |fibo_#in~n| 2))) (or (not (<= |fibo_#in~n| 5)) (and (= fibo_~n |fibo_#in~n|) (< 0 (+ |fibo_#t~ret4| 1)) (<= |fibo_#t~ret4| 3))) (or (<= |fibo_#t~ret4| 1) (not (<= |fibo_#in~n| 3)))) [2022-12-13 18:09:04,610 INFO L899 garLoopResultBuilder]: For program point L13-7(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,611 INFO L899 garLoopResultBuilder]: For program point L13-8(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,611 INFO L899 garLoopResultBuilder]: For program point L13-9(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,611 INFO L899 garLoopResultBuilder]: For program point fiboEXIT(lines 7 15) no Hoare annotation was computed. [2022-12-13 18:09:04,611 INFO L899 garLoopResultBuilder]: For program point fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,611 INFO L899 garLoopResultBuilder]: For program point fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,611 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 14) no Hoare annotation was computed. [2022-12-13 18:09:04,611 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 14) no Hoare annotation was computed. [2022-12-13 18:09:04,611 INFO L899 garLoopResultBuilder]: For program point fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2022-12-13 18:09:04,614 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 18:09:04,616 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:09:04,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:09:04 BoogieIcfgContainer [2022-12-13 18:09:04,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:09:04,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:09:04,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:09:04,624 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:09:04,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:08:56" (3/4) ... [2022-12-13 18:09:04,627 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:09:04,634 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2022-12-13 18:09:04,637 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-12-13 18:09:04,637 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 18:09:04,637 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 18:09:04,638 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:09:04,666 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:09:04,666 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:09:04,667 INFO L158 Benchmark]: Toolchain (without parser) took 8504.25ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 86.7MB in the beginning and 75.0MB in the end (delta: 11.7MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-12-13 18:09:04,667 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 140.5MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:09:04,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 158.57ms. Allocated memory is still 140.5MB. Free memory was 86.7MB in the beginning and 76.9MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 18:09:04,668 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.45ms. Allocated memory is still 140.5MB. Free memory was 76.9MB in the beginning and 75.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:09:04,668 INFO L158 Benchmark]: Boogie Preprocessor took 16.11ms. Allocated memory is still 140.5MB. Free memory was 75.3MB in the beginning and 74.5MB in the end (delta: 761.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:09:04,668 INFO L158 Benchmark]: RCFGBuilder took 223.13ms. Allocated memory is still 140.5MB. Free memory was 74.2MB in the beginning and 108.2MB in the end (delta: -33.9MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-12-13 18:09:04,668 INFO L158 Benchmark]: TraceAbstraction took 8033.32ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 107.7MB in the beginning and 78.2MB in the end (delta: 29.5MB). Peak memory consumption was 85.6MB. Max. memory is 16.1GB. [2022-12-13 18:09:04,669 INFO L158 Benchmark]: Witness Printer took 42.46ms. Allocated memory is still 169.9MB. Free memory was 78.2MB in the beginning and 75.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:09:04,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 140.5MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 158.57ms. Allocated memory is still 140.5MB. Free memory was 86.7MB in the beginning and 76.9MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.45ms. Allocated memory is still 140.5MB. Free memory was 76.9MB in the beginning and 75.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.11ms. Allocated memory is still 140.5MB. Free memory was 75.3MB in the beginning and 74.5MB in the end (delta: 761.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 223.13ms. Allocated memory is still 140.5MB. Free memory was 74.2MB in the beginning and 108.2MB in the end (delta: -33.9MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8033.32ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 107.7MB in the beginning and 78.2MB in the end (delta: 29.5MB). Peak memory consumption was 85.6MB. Max. memory is 16.1GB. * Witness Printer took 42.46ms. Allocated memory is still 169.9MB. Free memory was 78.2MB in the beginning and 75.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 8.0s, OverallIterations: 11, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 686 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 672 mSDsluCounter, 962 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 740 mSDsCounter, 280 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1460 IncrementalHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 280 mSolverCounterUnsat, 222 mSDtfsCounter, 1460 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1029 GetRequests, 834 SyntacticMatches, 32 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=7, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 178 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 137 PreInvPairs, 197 NumberOfFragments, 69 HoareAnnotationTreeSize, 137 FomulaSimplifications, 2595 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1139 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 992 NumberOfCodeBlocks, 992 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1336 ConstructedInterpolants, 0 QuantifiedInterpolants, 2986 SizeOfPredicates, 9 NumberOfNonLiveVariables, 997 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 2833/3560 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-13 18:09:04,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2a42915-7949-4f41-8aff-6c795396f626/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE