./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b2_o3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b2_o3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF --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 2bbfc52b9a0467d32481e7413235257f8cdbdcb51c829bb358c94a1739554a21 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:31:05,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:31:05,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:31:05,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:31:05,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:31:05,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:31:05,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:31:05,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:31:05,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:31:05,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:31:05,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:31:05,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:31:05,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:31:05,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:31:05,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:31:05,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:31:05,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:31:05,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:31:05,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:31:05,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:31:05,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:31:05,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:31:05,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:31:05,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:31:05,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:31:05,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:31:05,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:31:05,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:31:05,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:31:05,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:31:05,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:31:05,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:31:05,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:31:05,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:31:05,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:31:05,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:31:05,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:31:05,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:31:05,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:31:05,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:31:05,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:31:05,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:31:05,593 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:31:05,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:31:05,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:31:05,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:31:05,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:31:05,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:31:05,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:31:05,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:31:05,601 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:31:05,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:31:05,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:31:05,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:31:05,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:31:05,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:31:05,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:31:05,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:31:05,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:31:05,604 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:31:05,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:31:05,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:31:05,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:31:05,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:31:05,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:31:05,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:31:05,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:31:05,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:31:05,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:31:05,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:31:05,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:31:05,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:31:05,609 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:31:05,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:31:05,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:31:05,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:31:05,610 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_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bbfc52b9a0467d32481e7413235257f8cdbdcb51c829bb358c94a1739554a21 [2021-11-20 06:31:05,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:31:05,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:31:05,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:31:05,887 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:31:05,888 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:31:05,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/recursive-simple/id_b2_o3.c [2021-11-20 06:31:05,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/data/36f49087e/b119c5e0acc749d7b189436dc565178b/FLAGf4ad851fd [2021-11-20 06:31:06,442 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:31:06,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/sv-benchmarks/c/recursive-simple/id_b2_o3.c [2021-11-20 06:31:06,447 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/data/36f49087e/b119c5e0acc749d7b189436dc565178b/FLAGf4ad851fd [2021-11-20 06:31:06,823 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/data/36f49087e/b119c5e0acc749d7b189436dc565178b [2021-11-20 06:31:06,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:31:06,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:31:06,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:31:06,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:31:06,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:31:06,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:31:06" (1/1) ... [2021-11-20 06:31:06,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44946cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:06, skipping insertion in model container [2021-11-20 06:31:06,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:31:06" (1/1) ... [2021-11-20 06:31:06,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:31:06,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:31:07,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/sv-benchmarks/c/recursive-simple/id_b2_o3.c[568,581] [2021-11-20 06:31:07,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:31:07,050 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:31:07,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/sv-benchmarks/c/recursive-simple/id_b2_o3.c[568,581] [2021-11-20 06:31:07,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:31:07,077 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:31:07,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07 WrapperNode [2021-11-20 06:31:07,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:31:07,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:31:07,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:31:07,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:31:07,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (1/1) ... [2021-11-20 06:31:07,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (1/1) ... [2021-11-20 06:31:07,126 INFO L137 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-11-20 06:31:07,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:31:07,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:31:07,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:31:07,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:31:07,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (1/1) ... [2021-11-20 06:31:07,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (1/1) ... [2021-11-20 06:31:07,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (1/1) ... [2021-11-20 06:31:07,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (1/1) ... [2021-11-20 06:31:07,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (1/1) ... [2021-11-20 06:31:07,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (1/1) ... [2021-11-20 06:31:07,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (1/1) ... [2021-11-20 06:31:07,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:31:07,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:31:07,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:31:07,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:31:07,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (1/1) ... [2021-11-20 06:31:07,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:31:07,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:07,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:31:07,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:31:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:31:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:31:07,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:31:07,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:31:07,263 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-11-20 06:31:07,263 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-11-20 06:31:07,330 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:31:07,332 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:31:07,445 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:31:07,452 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:31:07,452 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:31:07,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:31:07 BoogieIcfgContainer [2021-11-20 06:31:07,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:31:07,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:31:07,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:31:07,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:31:07,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:31:06" (1/3) ... [2021-11-20 06:31:07,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173b7dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:31:07, skipping insertion in model container [2021-11-20 06:31:07,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:31:07" (2/3) ... [2021-11-20 06:31:07,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173b7dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:31:07, skipping insertion in model container [2021-11-20 06:31:07,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:31:07" (3/3) ... [2021-11-20 06:31:07,484 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b2_o3.c [2021-11-20 06:31:07,495 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:31:07,498 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:31:07,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:31:07,551 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 [2021-11-20 06:31:07,554 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:31:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:31:07,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 06:31:07,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:07,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:07,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:07,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1972897208, now seen corresponding path program 1 times [2021-11-20 06:31:07,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:07,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143293759] [2021-11-20 06:31:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:07,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:07,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:31:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:31:07,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:07,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143293759] [2021-11-20 06:31:07,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143293759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:07,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:07,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:31:07,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636847391] [2021-11-20 06:31:07,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:07,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:31:07,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:07,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:31:07,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:07,865 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-20 06:31:07,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:07,910 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-11-20 06:31:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:07,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2021-11-20 06:31:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:07,922 INFO L225 Difference]: With dead ends: 29 [2021-11-20 06:31:07,922 INFO L226 Difference]: Without dead ends: 16 [2021-11-20 06:31:07,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:07,930 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:07,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 62 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:31:07,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-20 06:31:07,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-20 06:31:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:31:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-20 06:31:07,973 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2021-11-20 06:31:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:07,974 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-20 06:31:07,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-20 06:31:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-20 06:31:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:31:07,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:07,976 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:07,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:31:07,977 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:07,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1641441273, now seen corresponding path program 1 times [2021-11-20 06:31:07,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:07,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126778197] [2021-11-20 06:31:07,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:07,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:08,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:31:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:08,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:31:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:31:08,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:08,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126778197] [2021-11-20 06:31:08,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126778197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:31:08,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:31:08,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:31:08,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863970027] [2021-11-20 06:31:08,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:08,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:31:08,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:08,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:31:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:08,191 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:31:08,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:08,224 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-11-20 06:31:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:08,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-20 06:31:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:08,227 INFO L225 Difference]: With dead ends: 28 [2021-11-20 06:31:08,227 INFO L226 Difference]: Without dead ends: 20 [2021-11-20 06:31:08,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:31:08,229 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:08,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 58 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:31:08,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-20 06:31:08,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-11-20 06:31:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 06:31:08,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-11-20 06:31:08,236 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 17 [2021-11-20 06:31:08,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:08,236 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-11-20 06:31:08,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:31:08,237 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-11-20 06:31:08,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:31:08,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:31:08,238 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:31:08,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:31:08,239 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:31:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:31:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1670070424, now seen corresponding path program 1 times [2021-11-20 06:31:08,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:31:08,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129253072] [2021-11-20 06:31:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:08,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:31:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:31:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:31:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:31:08,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:31:08,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129253072] [2021-11-20 06:31:08,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129253072] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:08,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638814489] [2021-11-20 06:31:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:31:08,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:08,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:31:08,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:31:08,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:31:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:31:08,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:31:08,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:31:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:31:08,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:31:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 06:31:09,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638814489] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:31:09,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:31:09,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 12 [2021-11-20 06:31:09,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390683542] [2021-11-20 06:31:09,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:31:09,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:31:09,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:31:09,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:31:09,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:31:09,051 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:31:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:31:09,078 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-11-20 06:31:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:31:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-20 06:31:09,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:31:09,080 INFO L225 Difference]: With dead ends: 18 [2021-11-20 06:31:09,080 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 06:31:09,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:31:09,088 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:31:09,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:31:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 06:31:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 06:31:09,094 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) [2021-11-20 06:31:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 06:31:09,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-11-20 06:31:09,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:31:09,095 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:31:09,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:31:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:31:09,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 06:31:09,100 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:31:09,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:31:09,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:31:09,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 06:31:09,312 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 06:31:09,312 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 06:31:09,313 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 06:31:09,313 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 06:31:09,313 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-20 06:31:09,313 INFO L858 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-11-20 06:31:09,314 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-11-20 06:31:09,314 INFO L861 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2021-11-20 06:31:09,314 INFO L858 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-11-20 06:31:09,314 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 19) no Hoare annotation was computed. [2021-11-20 06:31:09,315 INFO L858 garLoopResultBuilder]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2021-11-20 06:31:09,315 INFO L858 garLoopResultBuilder]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2021-11-20 06:31:09,315 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-11-20 06:31:09,315 INFO L861 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: true [2021-11-20 06:31:09,315 INFO L861 garLoopResultBuilder]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2021-11-20 06:31:09,316 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-11-20 06:31:09,316 INFO L858 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-11-20 06:31:09,320 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-20 06:31:09,321 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:31:09,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:31:09 BoogieIcfgContainer [2021-11-20 06:31:09,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:31:09,327 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:31:09,327 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:31:09,327 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:31:09,328 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:31:07" (3/4) ... [2021-11-20 06:31:09,331 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 06:31:09,338 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2021-11-20 06:31:09,342 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-20 06:31:09,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-20 06:31:09,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 06:31:09,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 06:31:09,372 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:31:09,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:31:09,373 INFO L158 Benchmark]: Toolchain (without parser) took 2547.07ms. Allocated memory is still 115.3MB. Free memory was 85.4MB in the beginning and 53.3MB in the end (delta: 32.2MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2021-11-20 06:31:09,374 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 77.6MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:31:09,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.65ms. Allocated memory is still 115.3MB. Free memory was 85.2MB in the beginning and 92.3MB in the end (delta: -7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:31:09,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.36ms. Allocated memory is still 115.3MB. Free memory was 92.3MB in the beginning and 90.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:31:09,375 INFO L158 Benchmark]: Boogie Preprocessor took 37.83ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 90.3MB in the end (delta: 482.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:31:09,376 INFO L158 Benchmark]: RCFGBuilder took 287.62ms. Allocated memory is still 115.3MB. Free memory was 89.8MB in the beginning and 81.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:31:09,376 INFO L158 Benchmark]: TraceAbstraction took 1860.47ms. Allocated memory is still 115.3MB. Free memory was 81.1MB in the beginning and 55.4MB in the end (delta: 25.7MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2021-11-20 06:31:09,376 INFO L158 Benchmark]: Witness Printer took 45.94ms. Allocated memory is still 115.3MB. Free memory was 55.4MB in the beginning and 53.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:31:09,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 77.6MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.65ms. Allocated memory is still 115.3MB. Free memory was 85.2MB in the beginning and 92.3MB in the end (delta: -7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.36ms. Allocated memory is still 115.3MB. Free memory was 92.3MB in the beginning and 90.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.83ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 90.3MB in the end (delta: 482.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 287.62ms. Allocated memory is still 115.3MB. Free memory was 89.8MB in the beginning and 81.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1860.47ms. Allocated memory is still 115.3MB. Free memory was 81.1MB in the beginning and 55.4MB in the end (delta: 25.7MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. * Witness Printer took 45.94ms. Allocated memory is still 115.3MB. Free memory was 55.4MB in the beginning and 53.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: 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, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 165 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 46 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 233 SizeOfPredicates, 2 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 12/16 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 RESULT: Ultimate proved your program to be correct! [2021-11-20 06:31:09,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d08bfa72-d514-4013-affb-ad3e95461236/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE