./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:20:46,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:20:46,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:20:46,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:20:46,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:20:46,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:20:46,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:20:46,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:20:46,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:20:46,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:20:46,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:20:46,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:20:46,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:20:46,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:20:46,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:20:46,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:20:46,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:20:46,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:20:46,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:20:46,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:20:46,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:20:46,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:20:46,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:20:46,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:20:46,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:20:46,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:20:46,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:20:46,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:20:46,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:20:46,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:20:46,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:20:46,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:20:46,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:20:46,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:20:46,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:20:46,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:20:46,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:20:46,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:20:46,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:20:46,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:20:46,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:20:46,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:20:46,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:20:46,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:20:46,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:20:46,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:20:46,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:20:46,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:20:46,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:20:46,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:20:46,357 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:20:46,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:20:46,359 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:20:46,359 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:20:46,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:20:46,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:20:46,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:20:46,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:20:46,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:20:46,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:20:46,360 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:20:46,361 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:20:46,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:20:46,361 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:20:46,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:20:46,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:20:46,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:20:46,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:20:46,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:20:46,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:20:46,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:20:46,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:20:46,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:20:46,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:20:46,366 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:20:46,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:20:46,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:20:46,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 [2022-11-18 20:20:46,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:20:46,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:20:46,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:20:46,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:20:46,728 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:20:46,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/recursive/Fibonacci02.c [2022-11-18 20:20:46,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/data/ad6a407a7/0543c5a3bc4d4997a5e90669de9a2972/FLAG3763503fb [2022-11-18 20:20:47,325 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:20:47,326 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/sv-benchmarks/c/recursive/Fibonacci02.c [2022-11-18 20:20:47,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/data/ad6a407a7/0543c5a3bc4d4997a5e90669de9a2972/FLAG3763503fb [2022-11-18 20:20:47,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/data/ad6a407a7/0543c5a3bc4d4997a5e90669de9a2972 [2022-11-18 20:20:47,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:20:47,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:20:47,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:20:47,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:20:47,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:20:47,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:20:47" (1/1) ... [2022-11-18 20:20:47,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0de19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:47, skipping insertion in model container [2022-11-18 20:20:47,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:20:47" (1/1) ... [2022-11-18 20:20:47,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:20:47,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:20:48,041 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2022-11-18 20:20:48,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:20:48,056 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:20:48,079 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2022-11-18 20:20:48,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:20:48,094 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:20:48,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48 WrapperNode [2022-11-18 20:20:48,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:20:48,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:20:48,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:20:48,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:20:48,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,133 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-18 20:20:48,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:20:48,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:20:48,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:20:48,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:20:48,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,160 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:20:48,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:20:48,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:20:48,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:20:48,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (1/1) ... [2022-11-18 20:20:48,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:20:48,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:48,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:20:48,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:20:48,250 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2022-11-18 20:20:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2022-11-18 20:20:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:20:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:20:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:20:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:20:48,337 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:20:48,339 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:20:48,527 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:20:48,534 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:20:48,534 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:20:48,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:20:48 BoogieIcfgContainer [2022-11-18 20:20:48,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:20:48,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:20:48,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:20:48,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:20:48,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:20:47" (1/3) ... [2022-11-18 20:20:48,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42277d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:20:48, skipping insertion in model container [2022-11-18 20:20:48,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:20:48" (2/3) ... [2022-11-18 20:20:48,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42277d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:20:48, skipping insertion in model container [2022-11-18 20:20:48,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:20:48" (3/3) ... [2022-11-18 20:20:48,546 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2022-11-18 20:20:48,565 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:20:48,566 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 20:20:48,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:20:48,652 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;@4fcdedea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:20:48,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 20:20:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 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) [2022-11-18 20:20:48,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:20:48,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:48,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:48,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash -108718961, now seen corresponding path program 1 times [2022-11-18 20:20:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:48,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523880917] [2022-11-18 20:20:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:48,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:48,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:48,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523880917] [2022-11-18 20:20:48,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523880917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:48,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:48,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:20:48,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053754796] [2022-11-18 20:20:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:48,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:20:49,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:20:49,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:20:49,072 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:49,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:49,203 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-18 20:20:49,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:20:49,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 20:20:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:49,213 INFO L225 Difference]: With dead ends: 33 [2022-11-18 20:20:49,213 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 20:20:49,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:20:49,219 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:49,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 39 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:20:49,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 20:20:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-18 20:20:49,276 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) [2022-11-18 20:20:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-18 20:20:49,281 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2022-11-18 20:20:49,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:49,281 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-18 20:20:49,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:49,282 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-18 20:20:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:20:49,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:49,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:49,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:20:49,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:49,287 INFO L85 PathProgramCache]: Analyzing trace with hash 924679547, now seen corresponding path program 1 times [2022-11-18 20:20:49,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:49,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932175594] [2022-11-18 20:20:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:49,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:49,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:49,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:49,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932175594] [2022-11-18 20:20:49,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932175594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:49,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:49,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:20:49,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107430918] [2022-11-18 20:20:49,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:49,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:20:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:49,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:20:49,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:20:49,380 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:49,440 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-18 20:20:49,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:20:49,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:20:49,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:49,443 INFO L225 Difference]: With dead ends: 24 [2022-11-18 20:20:49,443 INFO L226 Difference]: Without dead ends: 22 [2022-11-18 20:20:49,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:20:49,445 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:49,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:20:49,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-18 20:20:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-11-18 20:20:49,451 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) [2022-11-18 20:20:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-18 20:20:49,453 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2022-11-18 20:20:49,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:49,453 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-18 20:20:49,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:20:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-18 20:20:49,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:20:49,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:49,463 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:49,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:20:49,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1244761165, now seen corresponding path program 1 times [2022-11-18 20:20:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:49,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358260671] [2022-11-18 20:20:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:49,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:20:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:20:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:20:49,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:49,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358260671] [2022-11-18 20:20:49,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358260671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:49,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:49,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:20:49,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903441430] [2022-11-18 20:20:49,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:49,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:20:49,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:49,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:20:49,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:20:49,802 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) [2022-11-18 20:20:49,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:49,892 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-11-18 20:20:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:20:49,893 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 23 [2022-11-18 20:20:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:49,894 INFO L225 Difference]: With dead ends: 36 [2022-11-18 20:20:49,895 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 20:20:49,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:20:49,899 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:49,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:20:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 20:20:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-11-18 20:20:49,913 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) [2022-11-18 20:20:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-18 20:20:49,922 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2022-11-18 20:20:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:49,922 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-18 20:20:49,923 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) [2022-11-18 20:20:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-18 20:20:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:20:49,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:49,927 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:49,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:20:49,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:49,929 INFO L85 PathProgramCache]: Analyzing trace with hash 78572347, now seen corresponding path program 1 times [2022-11-18 20:20:49,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:49,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794592580] [2022-11-18 20:20:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:49,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:50,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:20:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:50,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:20:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:20:50,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:50,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794592580] [2022-11-18 20:20:50,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794592580] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:50,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157808366] [2022-11-18 20:20:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:50,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:50,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:50,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:50,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:20:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:50,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:20:50,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:50,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:50,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157808366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:50,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:50,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-11-18 20:20:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443637423] [2022-11-18 20:20:50,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:50,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:20:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:20:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:20:50,449 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:20:50,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:50,863 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2022-11-18 20:20:50,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:20:50,865 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2022-11-18 20:20:50,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:50,867 INFO L225 Difference]: With dead ends: 126 [2022-11-18 20:20:50,867 INFO L226 Difference]: Without dead ends: 93 [2022-11-18 20:20:50,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:20:50,869 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 122 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:50,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 135 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:20:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-18 20:20:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2022-11-18 20:20:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 64 states have internal predecessors, (69), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 13 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-18 20:20:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2022-11-18 20:20:50,897 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 24 [2022-11-18 20:20:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:50,898 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2022-11-18 20:20:50,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 20:20:50,898 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2022-11-18 20:20:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 20:20:50,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:50,900 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] [2022-11-18 20:20:50,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:20:51,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:51,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:51,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:51,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1267704266, now seen corresponding path program 2 times [2022-11-18 20:20:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:51,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932938061] [2022-11-18 20:20:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:51,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:20:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:51,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:20:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:20:51,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:51,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932938061] [2022-11-18 20:20:51,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932938061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:51,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112525576] [2022-11-18 20:20:51,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:20:51,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:51,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:51,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:51,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:20:51,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:20:51,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:51,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:20:51,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:20:51,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:20:51,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112525576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:51,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:20:51,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:20:51,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152947950] [2022-11-18 20:20:51,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:51,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:20:51,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:51,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:20:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:20:51,339 INFO L87 Difference]: Start difference. First operand 81 states and 112 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) [2022-11-18 20:20:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:51,378 INFO L93 Difference]: Finished difference Result 95 states and 128 transitions. [2022-11-18 20:20:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:20:51,379 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 30 [2022-11-18 20:20:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:51,380 INFO L225 Difference]: With dead ends: 95 [2022-11-18 20:20:51,380 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 20:20:51,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:20:51,382 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:51,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:20:51,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 20:20:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2022-11-18 20:20:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.106060606060606) internal successors, (73), 66 states have internal predecessors, (73), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 15 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-18 20:20:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 116 transitions. [2022-11-18 20:20:51,399 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 116 transitions. Word has length 30 [2022-11-18 20:20:51,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:51,400 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 116 transitions. [2022-11-18 20:20:51,400 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) [2022-11-18 20:20:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 116 transitions. [2022-11-18 20:20:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:20:51,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:51,407 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:51,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:51,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:51,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:51,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash -644126528, now seen corresponding path program 1 times [2022-11-18 20:20:51,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:51,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324295885] [2022-11-18 20:20:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:20:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:20:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 20:20:51,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:51,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324295885] [2022-11-18 20:20:51,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324295885] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:51,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841061908] [2022-11-18 20:20:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:51,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:51,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:51,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:51,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:20:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:51,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:20:51,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:20:51,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:20:52,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841061908] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:52,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:52,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-18 20:20:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344715396] [2022-11-18 20:20:52,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:52,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:20:52,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:52,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:20:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:20:52,148 INFO L87 Difference]: Start difference. First operand 85 states and 116 transitions. Second operand has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 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) [2022-11-18 20:20:53,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:53,021 INFO L93 Difference]: Finished difference Result 287 states and 442 transitions. [2022-11-18 20:20:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:20:53,022 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 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 31 [2022-11-18 20:20:53,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:53,024 INFO L225 Difference]: With dead ends: 287 [2022-11-18 20:20:53,024 INFO L226 Difference]: Without dead ends: 211 [2022-11-18 20:20:53,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:20:53,028 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 168 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:53,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 326 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:20:53,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-18 20:20:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 175. [2022-11-18 20:20:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.094890510948905) internal successors, (150), 137 states have internal predecessors, (150), 22 states have call successors, (22), 6 states have call predecessors, (22), 14 states have return successors, (83), 31 states have call predecessors, (83), 21 states have call successors, (83) [2022-11-18 20:20:53,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 255 transitions. [2022-11-18 20:20:53,054 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 255 transitions. Word has length 31 [2022-11-18 20:20:53,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:53,054 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 255 transitions. [2022-11-18 20:20:53,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 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) [2022-11-18 20:20:53,055 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 255 transitions. [2022-11-18 20:20:53,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:20:53,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:53,057 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:53,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:53,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:53,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:53,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1089076188, now seen corresponding path program 1 times [2022-11-18 20:20:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:53,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758413278] [2022-11-18 20:20:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:53,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:20:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:20:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-18 20:20:53,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:53,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758413278] [2022-11-18 20:20:53,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758413278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:20:53,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:20:53,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:20:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612325] [2022-11-18 20:20:53,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:20:53,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:20:53,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:53,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:20:53,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:20:53,442 INFO L87 Difference]: Start difference. First operand 175 states and 255 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) [2022-11-18 20:20:53,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:53,494 INFO L93 Difference]: Finished difference Result 192 states and 278 transitions. [2022-11-18 20:20:53,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:20:53,495 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 55 [2022-11-18 20:20:53,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:53,497 INFO L225 Difference]: With dead ends: 192 [2022-11-18 20:20:53,497 INFO L226 Difference]: Without dead ends: 190 [2022-11-18 20:20:53,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:20:53,499 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:53,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 99 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:20:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-18 20:20:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2022-11-18 20:20:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 143 states have (on average 1.0909090909090908) internal successors, (156), 142 states have internal predecessors, (156), 23 states have call successors, (23), 6 states have call predecessors, (23), 14 states have return successors, (89), 33 states have call predecessors, (89), 22 states have call successors, (89) [2022-11-18 20:20:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2022-11-18 20:20:53,523 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 55 [2022-11-18 20:20:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:53,523 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2022-11-18 20:20:53,523 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) [2022-11-18 20:20:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2022-11-18 20:20:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-18 20:20:53,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:53,527 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 7, 7, 7, 7, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:53,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:20:53,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:53,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1167140976, now seen corresponding path program 1 times [2022-11-18 20:20:53,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:53,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450515496] [2022-11-18 20:20:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:20:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:20:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 20:20:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:20:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:20:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-18 20:20:53,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:53,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450515496] [2022-11-18 20:20:53,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450515496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:53,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973766352] [2022-11-18 20:20:53,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:53,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:53,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:53,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:53,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:20:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:53,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:20:53,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:53,990 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 116 proven. 75 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-18 20:20:53,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 35 proven. 175 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 20:20:54,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973766352] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:54,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:54,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 24 [2022-11-18 20:20:54,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382120341] [2022-11-18 20:20:54,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:54,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:20:54,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:54,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:20:54,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:20:54,286 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 24 states, 22 states have (on average 3.727272727272727) internal successors, (82), 17 states have internal predecessors, (82), 12 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:20:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:55,005 INFO L93 Difference]: Finished difference Result 497 states and 797 transitions. [2022-11-18 20:20:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:20:55,005 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.727272727272727) internal successors, (82), 17 states have internal predecessors, (82), 12 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) Word has length 82 [2022-11-18 20:20:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:55,008 INFO L225 Difference]: With dead ends: 497 [2022-11-18 20:20:55,008 INFO L226 Difference]: Without dead ends: 330 [2022-11-18 20:20:55,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 155 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:20:55,011 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 244 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:55,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 443 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:20:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-11-18 20:20:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 302. [2022-11-18 20:20:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 238 states have (on average 1.096638655462185) internal successors, (261), 237 states have internal predecessors, (261), 38 states have call successors, (38), 11 states have call predecessors, (38), 24 states have return successors, (115), 53 states have call predecessors, (115), 37 states have call successors, (115) [2022-11-18 20:20:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 414 transitions. [2022-11-18 20:20:55,044 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 414 transitions. Word has length 82 [2022-11-18 20:20:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:55,045 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 414 transitions. [2022-11-18 20:20:55,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.727272727272727) internal successors, (82), 17 states have internal predecessors, (82), 12 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:20:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 414 transitions. [2022-11-18 20:20:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:20:55,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:55,049 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:55,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:55,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:55,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:55,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:55,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1192070742, now seen corresponding path program 1 times [2022-11-18 20:20:55,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:55,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912234021] [2022-11-18 20:20:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:55,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:20:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:20:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:20:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:20:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-11-18 20:20:55,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:55,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912234021] [2022-11-18 20:20:55,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912234021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:55,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969810556] [2022-11-18 20:20:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:55,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:55,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:55,401 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:55,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:20:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:55,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:20:55,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 226 proven. 134 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:20:55,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 226 proven. 134 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:20:56,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969810556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:56,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:56,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 23, 23] total 30 [2022-11-18 20:20:56,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191469193] [2022-11-18 20:20:56,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:56,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:20:56,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:20:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:20:56,261 INFO L87 Difference]: Start difference. First operand 302 states and 414 transitions. Second operand has 30 states, 28 states have (on average 3.5357142857142856) internal successors, (99), 20 states have internal predecessors, (99), 15 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:20:57,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:57,316 INFO L93 Difference]: Finished difference Result 588 states and 850 transitions. [2022-11-18 20:20:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:20:57,317 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.5357142857142856) internal successors, (99), 20 states have internal predecessors, (99), 15 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 93 [2022-11-18 20:20:57,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:57,320 INFO L225 Difference]: With dead ends: 588 [2022-11-18 20:20:57,320 INFO L226 Difference]: Without dead ends: 303 [2022-11-18 20:20:57,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 158 SyntacticMatches, 17 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=850, Invalid=2120, Unknown=0, NotChecked=0, Total=2970 [2022-11-18 20:20:57,324 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 567 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:57,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 169 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:20:57,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-18 20:20:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 284. [2022-11-18 20:20:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 223 states have (on average 1.094170403587444) internal successors, (244), 225 states have internal predecessors, (244), 36 states have call successors, (36), 12 states have call predecessors, (36), 23 states have return successors, (68), 46 states have call predecessors, (68), 35 states have call successors, (68) [2022-11-18 20:20:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 348 transitions. [2022-11-18 20:20:57,348 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 348 transitions. Word has length 93 [2022-11-18 20:20:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:57,348 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 348 transitions. [2022-11-18 20:20:57,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.5357142857142856) internal successors, (99), 20 states have internal predecessors, (99), 15 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:20:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 348 transitions. [2022-11-18 20:20:57,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 20:20:57,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:57,351 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:57,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:57,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:57,557 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:57,557 INFO L85 PathProgramCache]: Analyzing trace with hash 842988476, now seen corresponding path program 2 times [2022-11-18 20:20:57,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:57,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330246213] [2022-11-18 20:20:57,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:57,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:57,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:20:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:20:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:20:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:57,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:20:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-11-18 20:20:57,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:57,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330246213] [2022-11-18 20:20:57,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330246213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14246885] [2022-11-18 20:20:57,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:20:57,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:57,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:57,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:57,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:20:57,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:20:57,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:57,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:20:57,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 42 proven. 202 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:20:58,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 8 proven. 231 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:20:58,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14246885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:58,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:58,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 20, 21] total 25 [2022-11-18 20:20:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418948451] [2022-11-18 20:20:58,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:58,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:20:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:58,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:20:58,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:20:58,556 INFO L87 Difference]: Start difference. First operand 284 states and 348 transitions. Second operand has 25 states, 24 states have (on average 3.5) internal successors, (84), 18 states have internal predecessors, (84), 14 states have call successors, (16), 9 states have call predecessors, (16), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:20:59,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:59,071 INFO L93 Difference]: Finished difference Result 453 states and 569 transitions. [2022-11-18 20:20:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:20:59,071 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 18 states have internal predecessors, (84), 14 states have call successors, (16), 9 states have call predecessors, (16), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) Word has length 79 [2022-11-18 20:20:59,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:59,073 INFO L225 Difference]: With dead ends: 453 [2022-11-18 20:20:59,073 INFO L226 Difference]: Without dead ends: 187 [2022-11-18 20:20:59,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 139 SyntacticMatches, 17 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:20:59,076 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 262 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:59,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 425 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:20:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-18 20:20:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 175. [2022-11-18 20:20:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.144927536231884) internal successors, (158), 140 states have internal predecessors, (158), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:20:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2022-11-18 20:20:59,091 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 79 [2022-11-18 20:20:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:59,092 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2022-11-18 20:20:59,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 18 states have internal predecessors, (84), 14 states have call successors, (16), 9 states have call predecessors, (16), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:20:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2022-11-18 20:20:59,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 20:20:59,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:59,093 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:20:59,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:20:59,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:20:59,304 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:20:59,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:20:59,305 INFO L85 PathProgramCache]: Analyzing trace with hash 208625464, now seen corresponding path program 3 times [2022-11-18 20:20:59,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:20:59,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096089989] [2022-11-18 20:20:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:20:59,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:20:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:20:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:59,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:20:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:59,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:20:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:20:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:20:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-18 20:20:59,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:20:59,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096089989] [2022-11-18 20:20:59,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096089989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:20:59,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652377081] [2022-11-18 20:20:59,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:20:59,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:20:59,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:20:59,532 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:20:59,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:20:59,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:20:59,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:20:59,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:20:59,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:20:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-18 20:20:59,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:20:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-18 20:20:59,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652377081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:20:59,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:20:59,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2022-11-18 20:20:59,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697073419] [2022-11-18 20:20:59,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:20:59,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:20:59,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:20:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:20:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:20:59,861 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 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) [2022-11-18 20:20:59,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:20:59,958 INFO L93 Difference]: Finished difference Result 178 states and 203 transitions. [2022-11-18 20:20:59,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:20:59,958 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 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 80 [2022-11-18 20:20:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:20:59,961 INFO L225 Difference]: With dead ends: 178 [2022-11-18 20:20:59,961 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 20:20:59,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:20:59,963 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:20:59,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 123 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:20:59,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 20:20:59,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2022-11-18 20:20:59,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.1304347826086956) internal successors, (156), 140 states have internal predecessors, (156), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:20:59,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2022-11-18 20:20:59,982 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 80 [2022-11-18 20:20:59,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:20:59,982 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2022-11-18 20:20:59,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 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) [2022-11-18 20:20:59,983 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2022-11-18 20:20:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 20:20:59,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:20:59,990 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-18 20:21:00,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:00,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:00,195 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:21:00,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:00,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2122545154, now seen corresponding path program 2 times [2022-11-18 20:21:00,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:00,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008845692] [2022-11-18 20:21:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:00,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:21:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:21:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-11-18 20:21:00,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:00,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008845692] [2022-11-18 20:21:00,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008845692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:21:00,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:21:00,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:21:00,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720116522] [2022-11-18 20:21:00,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:21:00,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:21:00,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:00,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:21:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:21:00,300 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:21:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:00,332 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2022-11-18 20:21:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:21:00,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 81 [2022-11-18 20:21:00,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:00,336 INFO L225 Difference]: With dead ends: 176 [2022-11-18 20:21:00,336 INFO L226 Difference]: Without dead ends: 175 [2022-11-18 20:21:00,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:21:00,337 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:00,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:21:00,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-18 20:21:00,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-11-18 20:21:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 140 states have internal predecessors, (155), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:21:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 200 transitions. [2022-11-18 20:21:00,351 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 200 transitions. Word has length 81 [2022-11-18 20:21:00,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:00,351 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 200 transitions. [2022-11-18 20:21:00,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:21:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 200 transitions. [2022-11-18 20:21:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-18 20:21:00,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:00,353 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2022-11-18 20:21:00,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:21:00,354 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:21:00,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:00,354 INFO L85 PathProgramCache]: Analyzing trace with hash -284873213, now seen corresponding path program 3 times [2022-11-18 20:21:00,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:00,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094669683] [2022-11-18 20:21:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:00,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:21:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:21:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 38 proven. 23 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2022-11-18 20:21:00,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:00,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094669683] [2022-11-18 20:21:00,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094669683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:00,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515850590] [2022-11-18 20:21:00,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:21:00,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:00,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:00,742 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:00,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:21:00,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 20:21:00,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:00,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:21:00,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-11-18 20:21:00,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 62 proven. 5 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-11-18 20:21:01,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515850590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:01,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:01,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2022-11-18 20:21:01,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188309974] [2022-11-18 20:21:01,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:01,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:21:01,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:01,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:21:01,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:21:01,101 INFO L87 Difference]: Start difference. First operand 175 states and 200 transitions. Second operand has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:21:01,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:01,199 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2022-11-18 20:21:01,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:21:01,200 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) Word has length 114 [2022-11-18 20:21:01,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:01,201 INFO L225 Difference]: With dead ends: 175 [2022-11-18 20:21:01,202 INFO L226 Difference]: Without dead ends: 173 [2022-11-18 20:21:01,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 242 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:21:01,203 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:01,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 128 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:21:01,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-18 20:21:01,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-18 20:21:01,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.0583941605839415) internal successors, (145), 138 states have internal predecessors, (145), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:21:01,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 190 transitions. [2022-11-18 20:21:01,216 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 190 transitions. Word has length 114 [2022-11-18 20:21:01,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:01,216 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 190 transitions. [2022-11-18 20:21:01,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.642857142857143) internal successors, (51), 15 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:21:01,217 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 190 transitions. [2022-11-18 20:21:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-18 20:21:01,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:01,219 INFO L195 NwaCegarLoop]: trace histogram [19, 16, 14, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 3, 1, 1, 1, 1] [2022-11-18 20:21:01,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-18 20:21:01,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:01,424 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:21:01,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:01,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1425556519, now seen corresponding path program 4 times [2022-11-18 20:21:01,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:01,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479608574] [2022-11-18 20:21:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:01,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:21:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-18 20:21:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-11-18 20:21:02,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:02,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479608574] [2022-11-18 20:21:02,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479608574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:02,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91529939] [2022-11-18 20:21:02,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:21:02,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:02,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:02,214 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:02,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:21:02,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:21:02,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:02,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:21:02,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 78 proven. 129 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-11-18 20:21:02,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 144 proven. 122 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-18 20:21:04,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91529939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:04,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:04,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2022-11-18 20:21:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018553771] [2022-11-18 20:21:04,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:04,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 20:21:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 20:21:04,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:21:04,063 INFO L87 Difference]: Start difference. First operand 173 states and 190 transitions. Second operand has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 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) [2022-11-18 20:21:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:04,179 INFO L93 Difference]: Finished difference Result 174 states and 190 transitions. [2022-11-18 20:21:04,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:21:04,180 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 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 166 [2022-11-18 20:21:04,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:04,182 INFO L225 Difference]: With dead ends: 174 [2022-11-18 20:21:04,182 INFO L226 Difference]: Without dead ends: 173 [2022-11-18 20:21:04,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 346 SyntacticMatches, 16 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:21:04,183 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:04,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 168 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:21:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-18 20:21:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-18 20:21:04,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 138 states have internal predecessors, (141), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:21:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 186 transitions. [2022-11-18 20:21:04,197 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 186 transitions. Word has length 166 [2022-11-18 20:21:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:04,197 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 186 transitions. [2022-11-18 20:21:04,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6153846153846154) internal successors, (68), 27 states have internal predecessors, (68), 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) [2022-11-18 20:21:04,198 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 186 transitions. [2022-11-18 20:21:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-18 20:21:04,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:04,204 INFO L195 NwaCegarLoop]: trace histogram [43, 40, 35, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 19, 19, 13, 8, 1, 1, 1, 1] [2022-11-18 20:21:04,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:04,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:04,410 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:21:04,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:04,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1446613788, now seen corresponding path program 5 times [2022-11-18 20:21:04,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:04,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165316672] [2022-11-18 20:21:04,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:04,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:06,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:21:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:21:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:21:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:07,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-18 20:21:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:21:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2022-11-18 20:21:08,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165316672] [2022-11-18 20:21:08,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165316672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215248747] [2022-11-18 20:21:08,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:21:08,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:08,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:08,338 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:08,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:21:08,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-11-18 20:21:08,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:08,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-18 20:21:08,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 820 proven. 1093 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2022-11-18 20:21:09,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:21:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5965 backedges. 1149 proven. 996 refuted. 0 times theorem prover too weak. 3820 trivial. 0 not checked. [2022-11-18 20:21:17,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215248747] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:21:17,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:21:17,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2022-11-18 20:21:17,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340698722] [2022-11-18 20:21:17,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:21:17,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:21:17,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:21:17,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:21:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2022-11-18 20:21:17,545 INFO L87 Difference]: Start difference. First operand 173 states and 186 transitions. Second operand has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-18 20:21:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:21:17,708 INFO L93 Difference]: Finished difference Result 174 states and 186 transitions. [2022-11-18 20:21:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:21:17,709 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 409 [2022-11-18 20:21:17,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:21:17,711 INFO L225 Difference]: With dead ends: 174 [2022-11-18 20:21:17,711 INFO L226 Difference]: Without dead ends: 173 [2022-11-18 20:21:17,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 876 SyntacticMatches, 62 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:21:17,715 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 33 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:21:17,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 270 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:21:17,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-18 20:21:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-18 20:21:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.0072992700729928) internal successors, (138), 138 states have internal predecessors, (138), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:21:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 183 transitions. [2022-11-18 20:21:17,727 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 183 transitions. Word has length 409 [2022-11-18 20:21:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:21:17,728 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 183 transitions. [2022-11-18 20:21:17,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 41 states have internal predecessors, (102), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2022-11-18 20:21:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 183 transitions. [2022-11-18 20:21:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1065 [2022-11-18 20:21:17,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:21:17,770 INFO L195 NwaCegarLoop]: trace histogram [109, 108, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 53, 53, 34, 21, 1, 1, 1, 1] [2022-11-18 20:21:17,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:21:17,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:17,977 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-18 20:21:17,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:21:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash -581544090, now seen corresponding path program 6 times [2022-11-18 20:21:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:21:17,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451998027] [2022-11-18 20:21:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:21:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:21:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:28,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:21:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:21:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:21:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-18 20:21:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:21:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-11-18 20:21:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:21:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:21:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:34,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2022-11-18 20:21:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:21:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:21:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-11-18 20:21:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:21:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:21:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-18 20:21:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:21:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:21:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:21:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2022-11-18 20:21:36,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:21:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451998027] [2022-11-18 20:21:36,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451998027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:21:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806165273] [2022-11-18 20:21:36,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:21:36,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:21:36,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:21:36,206 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:21:36,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:21:36,981 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 83 check-sat command(s) [2022-11-18 20:21:36,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:21:36,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 217 conjunts are in the unsatisfiable core [2022-11-18 20:21:37,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:21:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 6686 proven. 7802 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2022-11-18 20:21:38,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:22:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 41413 backedges. 7863 proven. 7339 refuted. 0 times theorem prover too weak. 26211 trivial. 0 not checked. [2022-11-18 20:22:24,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806165273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:22:24,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:22:24,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 41] total 54 [2022-11-18 20:22:24,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180332013] [2022-11-18 20:22:24,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:22:24,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-18 20:22:24,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:22:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-18 20:22:24,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2328, Unknown=0, NotChecked=0, Total=2970 [2022-11-18 20:22:24,065 INFO L87 Difference]: Start difference. First operand 173 states and 183 transitions. Second operand has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) [2022-11-18 20:22:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:22:24,203 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2022-11-18 20:22:24,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:22:24,204 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) Word has length 1064 [2022-11-18 20:22:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:22:24,208 INFO L225 Difference]: With dead ends: 173 [2022-11-18 20:22:24,208 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 20:22:24,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2559 GetRequests, 2314 SyntacticMatches, 192 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7369 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=642, Invalid=2328, Unknown=0, NotChecked=0, Total=2970 [2022-11-18 20:22:24,210 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:22:24,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 228 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:22:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 20:22:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 20:22:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:22:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 20:22:24,212 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1064 [2022-11-18 20:22:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:22:24,213 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 20:22:24,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.5185185185185186) internal successors, (136), 55 states have internal predecessors, (136), 15 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (38), 38 states have call predecessors, (38), 15 states have call successors, (38) [2022-11-18 20:22:24,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 20:22:24,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 20:22:24,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-18 20:22:24,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-18 20:22:24,219 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-18 20:22:24,220 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-18 20:22:24,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-18 20:22:24,221 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-18 20:22:24,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:22:24,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:22:24,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 20:22:25,123 INFO L899 garLoopResultBuilder]: For program point fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,123 INFO L899 garLoopResultBuilder]: For program point fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,123 INFO L899 garLoopResultBuilder]: For program point fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,124 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2022-11-18 20:22:25,124 INFO L899 garLoopResultBuilder]: For program point fibonacciEXIT(lines 16 24) no Hoare annotation was computed. [2022-11-18 20:22:25,124 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 23) no Hoare annotation was computed. [2022-11-18 20:22:25,124 INFO L899 garLoopResultBuilder]: For program point fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,124 INFO L899 garLoopResultBuilder]: For program point fibonacciFINAL(lines 16 24) no Hoare annotation was computed. [2022-11-18 20:22:25,124 INFO L899 garLoopResultBuilder]: For program point fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,124 INFO L899 garLoopResultBuilder]: For program point fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,124 INFO L902 garLoopResultBuilder]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2022-11-18 20:22:25,124 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,125 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,125 INFO L895 garLoopResultBuilder]: At program point L22-2(line 22) the Hoare annotation is: (and (or (not (<= |fibonacci_#in~n| 9)) (= fibonacci_~n |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 1))) [2022-11-18 20:22:25,125 INFO L899 garLoopResultBuilder]: For program point L22-3(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,125 INFO L899 garLoopResultBuilder]: For program point L22-4(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,125 INFO L899 garLoopResultBuilder]: For program point L22-5(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,126 INFO L895 garLoopResultBuilder]: At program point L22-6(line 22) the Hoare annotation is: (let ((.cse0 (<= 2 |fibonacci_#t~ret4|)) (.cse1 (= fibonacci_~n |fibonacci_#in~n|))) (and (or (not (<= 7 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 7)) (and .cse0 (<= |fibonacci_#t~ret4| 8) .cse1)) (or (not (<= |fibonacci_#in~n| 2)) (< 1 fibonacci_~n)) (or (not (<= |fibonacci_#in~n| 5)) (not (<= 5 |fibonacci_#in~n|)) (and .cse0 (<= |fibonacci_#t~ret4| 3) .cse1)) (or (and .cse0 (<= |fibonacci_#t~ret4| 21) .cse1) (not (<= |fibonacci_#in~n| 9)) (not (<= 9 |fibonacci_#in~n|))) (or (and .cse0 (<= |fibonacci_#t~ret4| 2) .cse1) (not (< 3 |fibonacci_#in~n|)) (not (<= |fibonacci_#in~n| 4))) (or (not (<= |fibonacci_#in~n| 8)) (and .cse0 (<= |fibonacci_#t~ret4| 13) .cse1) (not (<= 8 |fibonacci_#in~n|))) (or (not (<= |fibonacci_#in~n| 3)) (and (= |fibonacci_#t~ret4| 1) .cse1)) (or (and .cse0 (<= |fibonacci_#t~ret4| 5) .cse1) (not (<= |fibonacci_#in~n| 6)) (not (<= 6 |fibonacci_#in~n|))))) [2022-11-18 20:22:25,126 INFO L899 garLoopResultBuilder]: For program point L22-7(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,126 INFO L899 garLoopResultBuilder]: For program point L22-8(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,126 INFO L899 garLoopResultBuilder]: For program point L22-9(line 22) no Hoare annotation was computed. [2022-11-18 20:22:25,126 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2022-11-18 20:22:25,126 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 20:22:25,127 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 20:22:25,127 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2022-11-18 20:22:25,127 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 20:22:25,127 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (<= 9 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 9)) [2022-11-18 20:22:25,127 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 20:22:25,127 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2022-11-18 20:22:25,128 INFO L895 garLoopResultBuilder]: At program point L27(lines 27 35) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 9) [2022-11-18 20:22:25,131 INFO L444 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1, 1, 1, 1] [2022-11-18 20:22:25,133 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:22:25,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:22:25 BoogieIcfgContainer [2022-11-18 20:22:25,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:22:25,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:22:25,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:22:25,148 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:22:25,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:20:48" (3/4) ... [2022-11-18 20:22:25,151 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:22:25,158 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2022-11-18 20:22:25,162 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-18 20:22:25,162 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 20:22:25,162 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:22:25,163 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:22:25,193 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:22:25,194 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:22:25,194 INFO L158 Benchmark]: Toolchain (without parser) took 97498.04ms. Allocated memory was 111.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 71.6MB in the beginning and 857.3MB in the end (delta: -785.7MB). Peak memory consumption was 380.7MB. Max. memory is 16.1GB. [2022-11-18 20:22:25,195 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:22:25,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.53ms. Allocated memory is still 111.1MB. Free memory was 71.4MB in the beginning and 85.5MB in the end (delta: -14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:22:25,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.35ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 84.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:22:25,196 INFO L158 Benchmark]: Boogie Preprocessor took 28.60ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 83.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:22:25,196 INFO L158 Benchmark]: RCFGBuilder took 372.52ms. Allocated memory is still 111.1MB. Free memory was 83.1MB in the beginning and 73.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:22:25,196 INFO L158 Benchmark]: TraceAbstraction took 96608.75ms. Allocated memory was 111.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 72.3MB in the beginning and 859.4MB in the end (delta: -787.1MB). Peak memory consumption was 383.1MB. Max. memory is 16.1GB. [2022-11-18 20:22:25,197 INFO L158 Benchmark]: Witness Printer took 46.21ms. Allocated memory is still 1.3GB. Free memory was 859.4MB in the beginning and 857.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:22:25,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.53ms. Allocated memory is still 111.1MB. Free memory was 71.4MB in the beginning and 85.5MB in the end (delta: -14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.35ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 84.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.60ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 83.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 372.52ms. Allocated memory is still 111.1MB. Free memory was 83.1MB in the beginning and 73.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 96608.75ms. Allocated memory was 111.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 72.3MB in the beginning and 859.4MB in the end (delta: -787.1MB). Peak memory consumption was 383.1MB. Max. memory is 16.1GB. * Witness Printer took 46.21ms. Allocated memory is still 1.3GB. Free memory was 859.4MB in the beginning and 857.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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, 30 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 96.5s, OverallIterations: 16, TraceHistogramMax: 109, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1604 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1552 mSDsluCounter, 2755 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2295 mSDsCounter, 565 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3650 IncrementalHoareTripleChecker+Invalid, 4215 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 565 mSolverCounterUnsat, 460 mSDtfsCounter, 3650 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5207 GetRequests, 4548 SyntacticMatches, 320 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11859 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302occurred in iteration=8, InterpolantAutomatonStates: 231, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 133 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 368 PreInvPairs, 401 NumberOfFragments, 159 HoareAnnotationTreeSize, 368 FomulaSimplifications, 971 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1027 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 85.8s InterpolantComputationTime, 4518 NumberOfCodeBlocks, 4407 NumberOfCodeBlocksAsserted, 148 NumberOfCheckSat, 6623 ConstructedInterpolants, 0 QuantifiedInterpolants, 15523 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4060 ConjunctsInSsa, 418 ConjunctsInUnsatCore, 37 InterpolantComputations, 6 PerfectInterpolantSequences, 122659/150242 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: 27]: Loop Invariant Derived loop invariant: x <= 9 RESULT: Ultimate proved your program to be correct! [2022-11-18 20:22:25,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9415d217-5141-42d8-ae9b-82d213c8f365/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE