./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Fibonacci01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b0570f2e0d80d68bc280040cce27f654b3fe7a2c0bad30f9bb811af9ca3d994 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:28:05,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:28:05,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:28:05,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:28:05,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:28:05,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:28:05,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:28:05,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:28:05,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:28:05,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:28:05,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:28:05,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:28:05,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:28:05,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:28:05,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:28:05,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:28:05,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:28:05,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:28:05,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:28:05,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:28:05,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:28:05,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:28:05,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:28:05,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:28:05,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:28:05,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:28:05,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:28:05,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:28:05,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:28:05,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:28:05,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:28:05,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:28:05,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:28:05,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:28:05,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:28:05,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:28:05,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:28:05,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:28:05,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:28:05,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:28:05,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:28:05,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:28:05,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:28:05,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:28:05,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:28:05,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:28:05,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:28:05,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:28:05,625 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:28:05,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:28:05,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:28:05,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:28:05,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:28:05,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:28:05,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:28:05,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:28:05,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:28:05,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:28:05,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:28:05,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:28:05,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:28:05,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:28:05,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:28:05,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:28:05,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:28:05,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:28:05,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:28:05,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:28:05,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:28:05,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:28:05,631 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:28:05,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:28:05,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:28:05,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:28:05,633 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_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0570f2e0d80d68bc280040cce27f654b3fe7a2c0bad30f9bb811af9ca3d994 [2021-10-21 20:28:05,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:28:05,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:28:05,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:28:05,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:28:05,907 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:28:05,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/recursive/Fibonacci01-1.c [2021-10-21 20:28:05,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/data/8a8d5a744/af22f19ff58343d7ad64ab42b1978de5/FLAGbb20feaf6 [2021-10-21 20:28:06,422 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:28:06,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/sv-benchmarks/c/recursive/Fibonacci01-1.c [2021-10-21 20:28:06,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/data/8a8d5a744/af22f19ff58343d7ad64ab42b1978de5/FLAGbb20feaf6 [2021-10-21 20:28:06,811 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/data/8a8d5a744/af22f19ff58343d7ad64ab42b1978de5 [2021-10-21 20:28:06,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:28:06,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:28:06,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:28:06,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:28:06,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:28:06,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:28:06" (1/1) ... [2021-10-21 20:28:06,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b40e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:06, skipping insertion in model container [2021-10-21 20:28:06,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:28:06" (1/1) ... [2021-10-21 20:28:06,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:28:06,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:28:07,038 WARN L228 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_75f3fa16-ae12-40b1-ad72-5ab5774b89de/sv-benchmarks/c/recursive/Fibonacci01-1.c[804,817] [2021-10-21 20:28:07,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:28:07,050 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:28:07,063 WARN L228 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_75f3fa16-ae12-40b1-ad72-5ab5774b89de/sv-benchmarks/c/recursive/Fibonacci01-1.c[804,817] [2021-10-21 20:28:07,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:28:07,077 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:28:07,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07 WrapperNode [2021-10-21 20:28:07,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:28:07,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:28:07,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:28:07,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:28:07,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (1/1) ... [2021-10-21 20:28:07,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (1/1) ... [2021-10-21 20:28:07,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:28:07,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:28:07,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:28:07,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:28:07,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (1/1) ... [2021-10-21 20:28:07,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (1/1) ... [2021-10-21 20:28:07,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (1/1) ... [2021-10-21 20:28:07,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (1/1) ... [2021-10-21 20:28:07,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (1/1) ... [2021-10-21 20:28:07,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (1/1) ... [2021-10-21 20:28:07,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (1/1) ... [2021-10-21 20:28:07,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:28:07,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:28:07,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:28:07,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:28:07,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (1/1) ... [2021-10-21 20:28:07,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:28:07,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:07,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:28:07,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:28:07,200 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2021-10-21 20:28:07,200 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2021-10-21 20:28:07,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:28:07,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:28:07,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:28:07,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:28:07,381 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:28:07,381 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:28:07,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:28:07 BoogieIcfgContainer [2021-10-21 20:28:07,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:28:07,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:28:07,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:28:07,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:28:07,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:28:06" (1/3) ... [2021-10-21 20:28:07,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a041da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:28:07, skipping insertion in model container [2021-10-21 20:28:07,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:07" (2/3) ... [2021-10-21 20:28:07,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a041da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:28:07, skipping insertion in model container [2021-10-21 20:28:07,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:28:07" (3/3) ... [2021-10-21 20:28:07,392 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2021-10-21 20:28:07,397 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:28:07,397 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:28:07,444 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:28:07,451 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:28:07,451 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:28:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 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) [2021-10-21 20:28:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:28:07,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:07,489 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:07,490 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:07,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:07,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1939714822, now seen corresponding path program 1 times [2021-10-21 20:28:07,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:07,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262323343] [2021-10-21 20:28:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:07,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:07,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:07,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262323343] [2021-10-21 20:28:07,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262323343] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:28:07,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:07,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:28:07,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291610219] [2021-10-21 20:28:07,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:28:07,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:07,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:28:07,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:28:07,859 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 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 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:28:07,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:07,956 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-10-21 20:28:07,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:28:07,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-21 20:28:07,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:07,966 INFO L225 Difference]: With dead ends: 32 [2021-10-21 20:28:07,966 INFO L226 Difference]: Without dead ends: 19 [2021-10-21 20:28:07,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:28:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-21 20:28:08,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-21 20:28:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:28:08,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-21 20:28:08,004 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2021-10-21 20:28:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:08,005 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-21 20:28:08,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:28:08,005 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-21 20:28:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:28:08,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:08,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:08,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:28:08,008 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:08,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:08,009 INFO L82 PathProgramCache]: Analyzing trace with hash 692912656, now seen corresponding path program 1 times [2021-10-21 20:28:08,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:08,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497754270] [2021-10-21 20:28:08,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:08,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:08,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:08,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497754270] [2021-10-21 20:28:08,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497754270] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:28:08,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:08,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:28:08,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892929967] [2021-10-21 20:28:08,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:28:08,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:08,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:28:08,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:28:08,121 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:28:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:08,217 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2021-10-21 20:28:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:28:08,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-21 20:28:08,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:08,220 INFO L225 Difference]: With dead ends: 25 [2021-10-21 20:28:08,220 INFO L226 Difference]: Without dead ends: 21 [2021-10-21 20:28:08,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:28:08,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-21 20:28:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-10-21 20:28:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:28:08,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-21 20:28:08,228 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-10-21 20:28:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:08,228 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-21 20:28:08,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:28:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-21 20:28:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:28:08,230 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:08,231 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:08,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:28:08,231 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:08,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:08,232 INFO L82 PathProgramCache]: Analyzing trace with hash 453332055, now seen corresponding path program 1 times [2021-10-21 20:28:08,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:08,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714526137] [2021-10-21 20:28:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:08,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:08,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:28:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:28:08,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:08,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714526137] [2021-10-21 20:28:08,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714526137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:08,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82357986] [2021-10-21 20:28:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:08,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:08,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:08,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:28:08,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:28:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:08,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 20:28:08,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:28:08,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82357986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:08,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:28:08,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 14 [2021-10-21 20:28:08,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896922778] [2021-10-21 20:28:08,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 20:28:08,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:08,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 20:28:08,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:28:08,819 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 20:28:08,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:08,974 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2021-10-21 20:28:08,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 20:28:08,975 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2021-10-21 20:28:08,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:08,978 INFO L225 Difference]: With dead ends: 36 [2021-10-21 20:28:08,979 INFO L226 Difference]: Without dead ends: 21 [2021-10-21 20:28:08,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:28:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-21 20:28:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-21 20:28:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-21 20:28:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-21 20:28:08,991 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 24 [2021-10-21 20:28:08,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:08,991 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-21 20:28:08,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 20:28:08,992 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-21 20:28:08,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 20:28:08,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:08,993 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:09,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:09,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:09,194 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:09,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:09,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1064754479, now seen corresponding path program 1 times [2021-10-21 20:28:09,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:09,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215687315] [2021-10-21 20:28:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:09,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:09,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:09,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-21 20:28:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-21 20:28:09,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:09,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215687315] [2021-10-21 20:28:09,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215687315] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:09,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836868398] [2021-10-21 20:28:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:09,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:09,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:09,393 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:28:09,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:28:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:09,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 20:28:09,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-21 20:28:09,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836868398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:09,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:28:09,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-21 20:28:09,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565492043] [2021-10-21 20:28:09,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 20:28:09,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:09,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 20:28:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-21 20:28:09,788 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 13 states have internal predecessors, (27), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 20:28:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:09,969 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-10-21 20:28:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:28:09,970 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 13 states have internal predecessors, (27), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 25 [2021-10-21 20:28:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:09,975 INFO L225 Difference]: With dead ends: 31 [2021-10-21 20:28:09,975 INFO L226 Difference]: Without dead ends: 27 [2021-10-21 20:28:09,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 212.4ms TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-10-21 20:28:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-21 20:28:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-10-21 20:28:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-10-21 20:28:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2021-10-21 20:28:09,992 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 25 [2021-10-21 20:28:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:09,992 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-10-21 20:28:09,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 13 states have internal predecessors, (27), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-21 20:28:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2021-10-21 20:28:09,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 20:28:09,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:09,996 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:10,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:10,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-21 20:28:10,211 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:10,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:10,211 INFO L82 PathProgramCache]: Analyzing trace with hash 484916750, now seen corresponding path program 2 times [2021-10-21 20:28:10,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:10,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899150962] [2021-10-21 20:28:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:10,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:10,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-21 20:28:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-10-21 20:28:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-21 20:28:10,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:10,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899150962] [2021-10-21 20:28:10,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899150962] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:10,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738323961] [2021-10-21 20:28:10,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:28:10,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:10,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:10,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:28:10,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:28:10,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:28:10,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:28:10,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:28:10,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-21 20:28:10,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738323961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:10,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:28:10,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-10-21 20:28:10,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592303564] [2021-10-21 20:28:10,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:28:10,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:10,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:28:10,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:28:10,676 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-21 20:28:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:10,762 INFO L93 Difference]: Finished difference Result 53 states and 77 transitions. [2021-10-21 20:28:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:28:10,763 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 38 [2021-10-21 20:28:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:10,765 INFO L225 Difference]: With dead ends: 53 [2021-10-21 20:28:10,765 INFO L226 Difference]: Without dead ends: 31 [2021-10-21 20:28:10,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:28:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-21 20:28:10,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-10-21 20:28:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-21 20:28:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-10-21 20:28:10,785 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 38 [2021-10-21 20:28:10,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:10,786 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-10-21 20:28:10,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-21 20:28:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-10-21 20:28:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-21 20:28:10,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:10,818 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:10,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:11,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:11,033 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:11,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:11,034 INFO L82 PathProgramCache]: Analyzing trace with hash 837439950, now seen corresponding path program 3 times [2021-10-21 20:28:11,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:11,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735901688] [2021-10-21 20:28:11,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:11,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:11,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:28:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:11,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-21 20:28:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:11,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-10-21 20:28:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-21 20:28:11,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:11,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735901688] [2021-10-21 20:28:11,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735901688] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:11,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036051012] [2021-10-21 20:28:11,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:28:11,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:11,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:11,311 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:28:11,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:28:11,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:28:11,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:28:11,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:28:11,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-21 20:28:11,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036051012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:11,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:28:11,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2021-10-21 20:28:11,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59905166] [2021-10-21 20:28:11,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 20:28:11,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 20:28:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-10-21 20:28:11,708 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 16 states have internal predecessors, (34), 7 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2021-10-21 20:28:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:12,061 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2021-10-21 20:28:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:28:12,062 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 16 states have internal predecessors, (34), 7 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) Word has length 39 [2021-10-21 20:28:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:12,063 INFO L225 Difference]: With dead ends: 42 [2021-10-21 20:28:12,063 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:28:12,064 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 342.3ms TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2021-10-21 20:28:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:28:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:28:12,065 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) [2021-10-21 20:28:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:28:12,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-10-21 20:28:12,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:12,065 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:28:12,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 16 states have internal predecessors, (34), 7 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2021-10-21 20:28:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:28:12,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:28:12,068 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:28:12,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:12,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:12,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:28:12,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:28:12,395 INFO L857 garLoopResultBuilder]: For program point fibonacciFINAL(lines 16 24) no Hoare annotation was computed. [2021-10-21 20:28:12,396 INFO L860 garLoopResultBuilder]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2021-10-21 20:28:12,401 INFO L853 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (and (< 1 fibonacci_~n) (= fibonacci_~n |fibonacci_#in~n|)) [2021-10-21 20:28:12,401 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-21 20:28:12,401 INFO L853 garLoopResultBuilder]: At program point L22-2(line 22) the Hoare annotation is: (and (<= 1 |fibonacci_#t~ret7|) (< 1 fibonacci_~n) (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (= fibonacci_~n |fibonacci_#in~n|)) [2021-10-21 20:28:12,401 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-10-21 20:28:12,401 INFO L857 garLoopResultBuilder]: For program point L22-3(line 22) no Hoare annotation was computed. [2021-10-21 20:28:12,401 INFO L857 garLoopResultBuilder]: For program point fibonacciEXIT(lines 16 24) no Hoare annotation was computed. [2021-10-21 20:28:12,401 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 23) no Hoare annotation was computed. [2021-10-21 20:28:12,401 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 37) no Hoare annotation was computed. [2021-10-21 20:28:12,401 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:28:12,402 INFO L860 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: true [2021-10-21 20:28:12,402 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:28:12,402 INFO L857 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2021-10-21 20:28:12,402 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:28:12,402 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 31) no Hoare annotation was computed. [2021-10-21 20:28:12,402 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:28:12,402 INFO L860 garLoopResultBuilder]: At program point L27(lines 27 38) the Hoare annotation is: true [2021-10-21 20:28:12,402 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2021-10-21 20:28:12,403 INFO L857 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2021-10-21 20:28:12,407 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:28:12,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:28:12 BoogieIcfgContainer [2021-10-21 20:28:12,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:28:12,414 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:28:12,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:28:12,415 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:28:12,415 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:28:07" (3/4) ... [2021-10-21 20:28:12,417 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:28:12,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2021-10-21 20:28:12,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-21 20:28:12,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:28:12,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:28:12,428 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:28:12,462 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:28:12,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:28:12,464 INFO L168 Benchmark]: Toolchain (without parser) took 5648.42 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 64.1 MB in the beginning and 81.5 MB in the end (delta: -17.4 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:12,465 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 73.4 MB. Free memory was 47.7 MB in the beginning and 47.7 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:12,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.01 ms. Allocated memory is still 98.6 MB. Free memory was 64.1 MB in the beginning and 75.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:12,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.46 ms. Allocated memory is still 98.6 MB. Free memory was 75.2 MB in the beginning and 73.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:12,466 INFO L168 Benchmark]: Boogie Preprocessor took 17.78 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 73.1 MB in the end (delta: 779.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:12,467 INFO L168 Benchmark]: RCFGBuilder took 260.50 ms. Allocated memory is still 98.6 MB. Free memory was 73.1 MB in the beginning and 63.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:12,468 INFO L168 Benchmark]: TraceAbstraction took 5028.87 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 63.4 MB in the beginning and 84.6 MB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:12,468 INFO L168 Benchmark]: Witness Printer took 48.40 ms. Allocated memory is still 119.5 MB. Free memory was 84.6 MB in the beginning and 81.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:12,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 73.4 MB. Free memory was 47.7 MB in the beginning and 47.7 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.01 ms. Allocated memory is still 98.6 MB. Free memory was 64.1 MB in the beginning and 75.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.46 ms. Allocated memory is still 98.6 MB. Free memory was 75.2 MB in the beginning and 73.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.78 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 73.1 MB in the end (delta: 779.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 260.50 ms. Allocated memory is still 98.6 MB. Free memory was 73.1 MB in the beginning and 63.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5028.87 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 63.4 MB in the beginning and 84.6 MB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 48.40 ms. Allocated memory is still 119.5 MB. Free memory was 84.6 MB in the beginning and 81.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 36]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4964.7ms, OverallIterations: 6, TraceHistogramMax: 5, EmptinessCheckTime: 36.9ms, AutomataDifference: 1031.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 112.3ms, InitialAbstractionConstructionTime: 16.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 85 SDtfs, 82 SDslu, 335 SDs, 0 SdLazy, 705 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 430.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 840.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=5, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 67.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 32 PreInvPairs, 49 NumberOfFragments, 25 HoareAnnotationTreeSize, 32 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 48.3ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 112 FormulaSimplificationTreeSizeReductionInter, 52.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 52.4ms SsaConstructionTime, 217.6ms SatisfiabilityAnalysisTime, 2100.1ms InterpolantComputationTime, 275 NumberOfCodeBlocks, 267 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 795 SizeOfPredicates, 15 NumberOfNonLiveVariables, 386 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 164/244 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 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 20:28:12,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f3fa16-ae12-40b1-ad72-5ab5774b89de/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...