./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.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_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/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_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/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_110bc026-9038-4d88-871c-fd8ade0637eb/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 e9f62e9366253d4fa7ecb8459a59d71535ca8498509abd809bca70a443281519 --- 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 16:38:14,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:38:14,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:38:14,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:38:14,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:38:14,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:38:14,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:38:14,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:38:14,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:38:14,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:38:14,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:38:14,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:38:14,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:38:14,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:38:14,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:38:14,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:38:14,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:38:14,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:38:14,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:38:15,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:38:15,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:38:15,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:38:15,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:38:15,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:38:15,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:38:15,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:38:15,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:38:15,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:38:15,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:38:15,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:38:15,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:38:15,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:38:15,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:38:15,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:38:15,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:38:15,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:38:15,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:38:15,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:38:15,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:38:15,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:38:15,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:38:15,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:38:15,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:38:15,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:38:15,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:38:15,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:38:15,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:38:15,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:38:15,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:38:15,112 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:38:15,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:38:15,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:38:15,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:38:15,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:38:15,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:38:15,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:38:15,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:38:15,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:38:15,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:38:15,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:38:15,116 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:38:15,116 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:38:15,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:38:15,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:38:15,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:38:15,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:38:15,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:38:15,118 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:38:15,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:38:15,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:38:15,119 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_110bc026-9038-4d88-871c-fd8ade0637eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f62e9366253d4fa7ecb8459a59d71535ca8498509abd809bca70a443281519 [2022-10-17 16:38:15,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:38:15,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:38:15,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:38:15,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:38:15,432 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:38:15,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c [2022-10-17 16:38:15,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/data/3414cce6a/4548958fddee4c8482dad341f030409b/FLAG52b85ca4e [2022-10-17 16:38:15,918 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:38:15,919 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c [2022-10-17 16:38:15,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/data/3414cce6a/4548958fddee4c8482dad341f030409b/FLAG52b85ca4e [2022-10-17 16:38:16,307 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/data/3414cce6a/4548958fddee4c8482dad341f030409b [2022-10-17 16:38:16,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:38:16,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:38:16,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:38:16,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:38:16,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:38:16,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c7862c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16, skipping insertion in model container [2022-10-17 16:38:16,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:38:16,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:38:16,541 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_110bc026-9038-4d88-871c-fd8ade0637eb/sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c[951,964] [2022-10-17 16:38:16,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:38:16,554 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:38:16,570 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_110bc026-9038-4d88-871c-fd8ade0637eb/sv-benchmarks/c/recursive-simple/fibo_2calls_20-2.c[951,964] [2022-10-17 16:38:16,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:38:16,585 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:38:16,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16 WrapperNode [2022-10-17 16:38:16,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:38:16,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:38:16,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:38:16,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:38:16,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,620 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-10-17 16:38:16,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:38:16,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:38:16,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:38:16,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:38:16,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:38:16,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:38:16,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:38:16,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:38:16,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:16,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:38:16,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:38:16,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:38:16,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_110bc026-9038-4d88-871c-fd8ade0637eb/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:38:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:38:16,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:38:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-10-17 16:38:16,740 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-10-17 16:38:16,740 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-10-17 16:38:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-10-17 16:38:16,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:38:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:38:16,813 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:38:16,816 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:38:16,965 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:38:16,983 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:38:16,983 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 16:38:16,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:38:16 BoogieIcfgContainer [2022-10-17 16:38:16,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:38:16,987 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:38:16,987 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:38:16,998 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:38:16,998 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:38:16" (1/1) ... [2022-10-17 16:38:17,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:38:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:17,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2022-10-17 16:38:17,102 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-10-17 16:38:17,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:38:17,107 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:17,451 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 16:38:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 28 states and 37 transitions. [2022-10-17 16:38:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2022-10-17 16:38:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 16:38:17,566 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:17,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:17,663 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 16:38:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:17,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 30 states and 41 transitions. [2022-10-17 16:38:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-10-17 16:38:17,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 16:38:17,815 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:17,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:18,099 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 16:38:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 32 states and 45 transitions. [2022-10-17 16:38:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 45 transitions. [2022-10-17 16:38:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 16:38:18,327 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:18,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:18,502 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 16:38:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 39 states and 59 transitions. [2022-10-17 16:38:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 59 transitions. [2022-10-17 16:38:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-17 16:38:18,843 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:18,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:18,989 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 16:38:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 39 states and 58 transitions. [2022-10-17 16:38:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 58 transitions. [2022-10-17 16:38:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 16:38:19,192 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:19,466 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 16:38:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 39 states and 55 transitions. [2022-10-17 16:38:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2022-10-17 16:38:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-17 16:38:20,028 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:20,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:20,206 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 16:38:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 49 states and 74 transitions. [2022-10-17 16:38:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 74 transitions. [2022-10-17 16:38:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-17 16:38:21,001 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:21,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:21,163 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 16:38:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:21,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 49 states and 73 transitions. [2022-10-17 16:38:21,323 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 73 transitions. [2022-10-17 16:38:21,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 16:38:21,328 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:21,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:21,733 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 16:38:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 52 states and 79 transitions. [2022-10-17 16:38:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 79 transitions. [2022-10-17 16:38:22,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 16:38:22,885 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:23,133 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 16:38:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 62 states and 100 transitions. [2022-10-17 16:38:23,926 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 100 transitions. [2022-10-17 16:38:23,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-10-17 16:38:23,930 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 51 proven. 299 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2022-10-17 16:38:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 72 states and 124 transitions. [2022-10-17 16:38:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2022-10-17 16:38:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-10-17 16:38:25,330 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:25,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 140 proven. 168 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-10-17 16:38:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 72 states and 122 transitions. [2022-10-17 16:38:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 122 transitions. [2022-10-17 16:38:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-10-17 16:38:26,599 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:26,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 53 proven. 288 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-10-17 16:38:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 82 states and 147 transitions. [2022-10-17 16:38:27,990 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 147 transitions. [2022-10-17 16:38:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2022-10-17 16:38:28,016 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:28,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 17073 backedges. 253 proven. 1747 refuted. 0 times theorem prover too weak. 15073 trivial. 0 not checked. [2022-10-17 16:38:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 92 states and 175 transitions. [2022-10-17 16:38:30,960 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 175 transitions. [2022-10-17 16:38:30,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2022-10-17 16:38:30,985 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:30,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 14593 backedges. 242 proven. 1861 refuted. 0 times theorem prover too weak. 12490 trivial. 0 not checked. [2022-10-17 16:38:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 102 states and 206 transitions. [2022-10-17 16:38:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 206 transitions. [2022-10-17 16:38:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2022-10-17 16:38:33,749 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:33,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 19601 backedges. 1822 proven. 1154 refuted. 0 times theorem prover too weak. 16625 trivial. 0 not checked. [2022-10-17 16:38:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 104 states and 206 transitions. [2022-10-17 16:38:36,847 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 206 transitions. [2022-10-17 16:38:36,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1581 [2022-10-17 16:38:36,869 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 75139 backedges. 635 proven. 4941 refuted. 0 times theorem prover too weak. 69563 trivial. 0 not checked. [2022-10-17 16:38:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 114 states and 238 transitions. [2022-10-17 16:38:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 238 transitions. [2022-10-17 16:38:42,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1522 [2022-10-17 16:38:42,917 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:42,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms