./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 16:51:57,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:51:57,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:51:57,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:51:57,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:51:57,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:51:57,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:51:57,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:51:57,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:51:57,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:51:57,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:51:57,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:51:57,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:51:57,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:51:57,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:51:57,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:51:57,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:51:57,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:51:57,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:51:57,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:51:57,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:51:57,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:51:57,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:51:58,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:51:58,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:51:58,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:51:58,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:51:58,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:51:58,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:51:58,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:51:58,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:51:58,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:51:58,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:51:58,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:51:58,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:51:58,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:51:58,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:51:58,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:51:58,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:51:58,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:51:58,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:51:58,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:51:58,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:51:58,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:51:58,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:51:58,076 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:51:58,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:51:58,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:51:58,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:51:58,078 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:51:58,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:51:58,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:51:58,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:51:58,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:51:58,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:51:58,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:51:58,081 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:51:58,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:51:58,091 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:51:58,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:51:58,093 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:51:58,093 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:51:58,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:51:58,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:51:58,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:51:58,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:51:58,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:51:58,096 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:51:58,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:51:58,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:51:58,097 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_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe [2022-10-17 16:51:58,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:51:58,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:51:58,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:51:58,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:51:58,531 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:51:58,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2022-10-17 16:51:58,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/data/4f4384229/51f9698f0a5446149882d2186c80935c/FLAGdc1824822 [2022-10-17 16:51:59,176 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:51:59,177 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2022-10-17 16:51:59,183 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/data/4f4384229/51f9698f0a5446149882d2186c80935c/FLAGdc1824822 [2022-10-17 16:51:59,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/data/4f4384229/51f9698f0a5446149882d2186c80935c [2022-10-17 16:51:59,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:51:59,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:51:59,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:51:59,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:51:59,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:51:59,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4587ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59, skipping insertion in model container [2022-10-17 16:51:59,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:51:59,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:51:59,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2022-10-17 16:51:59,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:51:59,796 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:51:59,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2022-10-17 16:51:59,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:51:59,828 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:51:59,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59 WrapperNode [2022-10-17 16:51:59,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:51:59,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:51:59,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:51:59,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:51:59,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,866 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-10-17 16:51:59,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:51:59,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:51:59,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:51:59,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:51:59,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:51:59,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:51:59,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:51:59,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:51:59,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:51:59" (1/1) ... [2022-10-17 16:51:59,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:51:59,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:51:59,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:51:59,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9396a239-5809-47b6-8802-8587b91f5186/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:51:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:51:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:51:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-10-17 16:51:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-10-17 16:51:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-10-17 16:51:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-10-17 16:51:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:51:59,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:52:00,085 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:52:00,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:52:00,330 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:52:00,364 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:52:00,364 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 16:52:00,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:52:00 BoogieIcfgContainer [2022-10-17 16:52:00,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:52:00,374 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:52:00,374 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:52:00,385 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:52:00,386 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:52:00" (1/1) ... [2022-10-17 16:52:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:52:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2022-10-17 16:52:00,511 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-10-17 16:52:00,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:52:00,517 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:00,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:00,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 28 states and 37 transitions. [2022-10-17 16:52:00,977 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2022-10-17 16:52:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 16:52:00,978 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:00,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:52:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 30 states and 41 transitions. [2022-10-17 16:52:01,267 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-10-17 16:52:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 16:52:01,270 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:01,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 16:52:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 32 states and 45 transitions. [2022-10-17 16:52:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2022-10-17 16:52:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 16:52:01,819 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:01,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 16:52:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 39 states and 59 transitions. [2022-10-17 16:52:02,405 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 59 transitions. [2022-10-17 16:52:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-17 16:52:02,413 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:02,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 16:52:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 39 states and 58 transitions. [2022-10-17 16:52:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 58 transitions. [2022-10-17 16:52:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 16:52:02,816 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:02,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 16:52:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 39 states and 55 transitions. [2022-10-17 16:52:03,665 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2022-10-17 16:52:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-17 16:52:03,667 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:03,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-17 16:52:04,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 49 states and 74 transitions. [2022-10-17 16:52:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 74 transitions. [2022-10-17 16:52:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-17 16:52:04,859 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 16:52:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 49 states and 73 transitions. [2022-10-17 16:52:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 73 transitions. [2022-10-17 16:52:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 16:52:05,173 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:05,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 16:52:06,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 52 states and 79 transitions. [2022-10-17 16:52:06,734 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 79 transitions. [2022-10-17 16:52:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 16:52:06,735 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:06,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-17 16:52:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 62 states and 100 transitions. [2022-10-17 16:52:07,810 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 100 transitions. [2022-10-17 16:52:07,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-10-17 16:52:07,813 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:07,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 36 proven. 151 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-10-17 16:52:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 72 states and 124 transitions. [2022-10-17 16:52:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2022-10-17 16:52:09,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-10-17 16:52:09,092 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:09,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 137 proven. 74 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-10-17 16:52:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 77 states and 114 transitions. [2022-10-17 16:52:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 114 transitions. [2022-10-17 16:52:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-10-17 16:52:11,284 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:11,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-10-17 16:52:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 100 states and 185 transitions. [2022-10-17 16:52:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 185 transitions. [2022-10-17 16:52:28,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-10-17 16:52:28,506 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:28,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:52:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 157 proven. 148 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2022-10-17 16:52:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:52:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 92 states and 155 transitions. [2022-10-17 16:52:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 155 transitions. [2022-10-17 16:52:29,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-10-17 16:52:29,469 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:52:29,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:52:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat