./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float5.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_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/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_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/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_3fd91edc-413b-42d4-bda9-9ca414a5a34d/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 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:24:36,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:24:36,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:24:36,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:24:36,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:24:36,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:24:36,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:24:36,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:24:36,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:24:36,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:24:36,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:24:36,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:24:36,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:24:36,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:24:36,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:24:36,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:24:36,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:24:36,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:24:36,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:24:36,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:24:36,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:24:36,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:24:36,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:24:36,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:24:36,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:24:36,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:24:36,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:24:36,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:24:36,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:24:36,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:24:36,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:24:36,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:24:36,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:24:36,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:24:36,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:24:36,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:24:36,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:24:36,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:24:36,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:24:36,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:24:36,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:24:36,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:24:36,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:24:36,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:24:36,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:24:36,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:24:36,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:24:36,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:24:36,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:24:36,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:24:36,781 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:24:36,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:24:36,781 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:24:36,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:24:36,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:24:36,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:24:36,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:24:36,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:24:36,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:24:36,783 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:24:36,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:24:36,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:24:36,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:24:36,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:24:36,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:24:36,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:24:36,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:24:36,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:24:36,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:24:36,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:24:36,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:24:36,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:24:36,787 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:24:36,787 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:24:36,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:24:36,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:24:36,788 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_3fd91edc-413b-42d4-bda9-9ca414a5a34d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d [2021-11-20 06:24:37,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:24:37,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:24:37,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:24:37,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:24:37,216 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:24:37,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-11-20 06:24:37,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/data/5d8d28517/4c0c4f69486245dab9d5c67cba14d906/FLAGee53ced20 [2021-11-20 06:24:37,863 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:24:37,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-11-20 06:24:37,878 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/data/5d8d28517/4c0c4f69486245dab9d5c67cba14d906/FLAGee53ced20 [2021-11-20 06:24:38,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/data/5d8d28517/4c0c4f69486245dab9d5c67cba14d906 [2021-11-20 06:24:38,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:24:38,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:24:38,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:24:38,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:24:38,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:24:38,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549ff2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38, skipping insertion in model container [2021-11-20 06:24:38,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:24:38,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:24:38,450 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_3fd91edc-413b-42d4-bda9-9ca414a5a34d/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-11-20 06:24:38,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:24:38,465 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:24:38,480 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_3fd91edc-413b-42d4-bda9-9ca414a5a34d/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-11-20 06:24:38,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:24:38,494 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:24:38,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38 WrapperNode [2021-11-20 06:24:38,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:24:38,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:24:38,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:24:38,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:24:38,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,529 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2021-11-20 06:24:38,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:24:38,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:24:38,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:24:38,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:24:38,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:24:38,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:24:38,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:24:38,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:24:38,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (1/1) ... [2021-11-20 06:24:38,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:24:38,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:38,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:24:38,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:24:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:24:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:24:38,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:24:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:24:38,681 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:24:38,683 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:24:38,763 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:24:38,769 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:24:38,770 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:24:38,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:24:38 BoogieIcfgContainer [2021-11-20 06:24:38,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:24:38,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:24:38,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:24:38,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:24:38,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:24:38" (1/3) ... [2021-11-20 06:24:38,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6deead51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:24:38, skipping insertion in model container [2021-11-20 06:24:38,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:38" (2/3) ... [2021-11-20 06:24:38,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6deead51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:24:38, skipping insertion in model container [2021-11-20 06:24:38,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:24:38" (3/3) ... [2021-11-20 06:24:38,782 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2021-11-20 06:24:38,789 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:24:38,789 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:24:38,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:24:38,854 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 06:24:38,855 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:24:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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 06:24:38,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:24:38,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:38,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:24:38,896 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:24:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-20 06:24:38,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:38,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652011592] [2021-11-20 06:24:38,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:38,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:39,141 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 06:24:39,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:24:39,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652011592] [2021-11-20 06:24:39,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652011592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:39,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:39,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:24:39,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684062618] [2021-11-20 06:24:39,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:39,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:24:39,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:24:39,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:24:39,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:24:39,213 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:24:39,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:39,228 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-20 06:24:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:24:39,231 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2021-11-20 06:24:39,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:39,242 INFO L225 Difference]: With dead ends: 17 [2021-11-20 06:24:39,243 INFO L226 Difference]: Without dead ends: 7 [2021-11-20 06:24:39,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:24:39,256 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:39,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:24:39,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-20 06:24:39,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-20 06:24:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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 06:24:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-20 06:24:39,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-20 06:24:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:39,299 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-20 06:24:39,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:24:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-20 06:24:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:24:39,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:39,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:24:39,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:24:39,302 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:24:39,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-20 06:24:39,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:24:39,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739893061] [2021-11-20 06:24:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:39,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:24:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:24:39,335 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:24:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:24:39,395 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:24:39,395 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:24:39,398 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:24:39,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:24:39,406 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 06:24:39,411 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:24:39,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:24:39 BoogieIcfgContainer [2021-11-20 06:24:39,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:24:39,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:24:39,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:24:39,452 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:24:39,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:24:38" (3/4) ... [2021-11-20 06:24:39,464 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:24:39,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:24:39,466 INFO L158 Benchmark]: Toolchain (without parser) took 1254.77ms. Allocated memory is still 111.1MB. Free memory was 74.7MB in the beginning and 53.9MB in the end (delta: 20.9MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-11-20 06:24:39,467 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 111.1MB. Free memory was 86.9MB in the beginning and 86.9MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:24:39,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.87ms. Allocated memory is still 111.1MB. Free memory was 74.5MB in the beginning and 85.7MB in the end (delta: -11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:24:39,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.09ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 84.8MB in the end (delta: 938.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:24:39,474 INFO L158 Benchmark]: Boogie Preprocessor took 18.75ms. Allocated memory is still 111.1MB. Free memory was 84.8MB in the beginning and 83.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:24:39,477 INFO L158 Benchmark]: RCFGBuilder took 222.30ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 75.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:24:39,478 INFO L158 Benchmark]: TraceAbstraction took 674.66ms. Allocated memory is still 111.1MB. Free memory was 74.9MB in the beginning and 54.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-20 06:24:39,478 INFO L158 Benchmark]: Witness Printer took 13.86ms. Allocated memory is still 111.1MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:24:39,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 111.1MB. Free memory was 86.9MB in the beginning and 86.9MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.87ms. Allocated memory is still 111.1MB. Free memory was 74.5MB in the beginning and 85.7MB in the end (delta: -11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.09ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 84.8MB in the end (delta: 938.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.75ms. Allocated memory is still 111.1MB. Free memory was 84.8MB in the beginning and 83.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 222.30ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 75.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 674.66ms. Allocated memory is still 111.1MB. Free memory was 74.9MB in the beginning and 54.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 13.86ms. Allocated memory is still 111.1MB. Free memory is still 53.9MB. There was no memory consumed. 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 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 12. Possible FailurePath: [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L8] float a=__VERIFIER_nondet_float(), b=__VERIFIER_nondet_float(); [L10] COND FALSE !(!(a==1 || a==0.5 || a==2 || a==3 || a==0.1)) [L11] b=a [L12] a/=2 [L13] a*=2 VAL [b=49] [L14] COND TRUE !(a==b) VAL [b=49] [L14] reach_error() VAL [b=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:24:39,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/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_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/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 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:24:42,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:24:42,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:24:42,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:24:42,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:24:42,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:24:42,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:24:42,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:24:42,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:24:42,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:24:42,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:24:42,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:24:42,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:24:42,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:24:42,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:24:42,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:24:42,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:24:42,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:24:42,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:24:42,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:24:42,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:24:42,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:24:42,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:24:42,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:24:42,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:24:42,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:24:42,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:24:42,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:24:42,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:24:42,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:24:42,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:24:42,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:24:42,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:24:42,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:24:42,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:24:42,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:24:42,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:24:42,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:24:42,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:24:42,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:24:42,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:24:42,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 06:24:42,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:24:42,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:24:42,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:24:42,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:24:42,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:24:42,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:24:42,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:24:42,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:24:42,676 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:24:42,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:24:42,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:24:42,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:24:42,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:24:42,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:24:42,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:24:42,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:24:42,680 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:24:42,680 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:24:42,681 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:24:42,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:24:42,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:24:42,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:24:42,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:24:42,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:24:42,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:24:42,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:24:42,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:24:42,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:24:42,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:24:42,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:24:42,684 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:24:42,685 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:24:42,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:24:42,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:24:42,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:24:42,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:24:42,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:24:42,687 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3fd91edc-413b-42d4-bda9-9ca414a5a34d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fe8fc4355a4e8558a06e9516fd8b9c3e5a636112d9ce6a006f4aad85245907d [2021-11-20 06:24:43,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:24:43,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:24:43,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:24:43,171 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:24:43,172 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:24:43,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-11-20 06:24:43,252 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/data/babafc1da/26459a45df364ba1883b861b10c2b1d7/FLAGbcf90b192 [2021-11-20 06:24:43,927 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:24:43,928 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/sv-benchmarks/c/floats-cbmc-regression/float5.c [2021-11-20 06:24:43,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/data/babafc1da/26459a45df364ba1883b861b10c2b1d7/FLAGbcf90b192 [2021-11-20 06:24:44,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/data/babafc1da/26459a45df364ba1883b861b10c2b1d7 [2021-11-20 06:24:44,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:24:44,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:24:44,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:24:44,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:24:44,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:24:44,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73fd7d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44, skipping insertion in model container [2021-11-20 06:24:44,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:24:44,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:24:44,505 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_3fd91edc-413b-42d4-bda9-9ca414a5a34d/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-11-20 06:24:44,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:24:44,525 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:24:44,544 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_3fd91edc-413b-42d4-bda9-9ca414a5a34d/sv-benchmarks/c/floats-cbmc-regression/float5.c[501,514] [2021-11-20 06:24:44,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:24:44,562 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:24:44,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44 WrapperNode [2021-11-20 06:24:44,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:24:44,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:24:44,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:24:44,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:24:44,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,603 INFO L137 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-11-20 06:24:44,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:24:44,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:24:44,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:24:44,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:24:44,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:24:44,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:24:44,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:24:44,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:24:44,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (1/1) ... [2021-11-20 06:24:44,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:24:44,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:24:44,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:24:44,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:24:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:24:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:24:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:24:44,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:24:44,831 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:24:44,833 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:24:45,113 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:24:45,121 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:24:45,121 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:24:45,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:24:45 BoogieIcfgContainer [2021-11-20 06:24:45,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:24:45,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:24:45,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:24:45,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:24:45,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:24:44" (1/3) ... [2021-11-20 06:24:45,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216d4e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:24:45, skipping insertion in model container [2021-11-20 06:24:45,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:24:44" (2/3) ... [2021-11-20 06:24:45,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216d4e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:24:45, skipping insertion in model container [2021-11-20 06:24:45,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:24:45" (3/3) ... [2021-11-20 06:24:45,133 INFO L111 eAbstractionObserver]: Analyzing ICFG float5.c [2021-11-20 06:24:45,140 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:24:45,140 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:24:45,200 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:24:45,209 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 06:24:45,209 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:24:45,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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 06:24:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:24:45,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:45,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:24:45,234 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:24:45,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-11-20 06:24:45,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:24:45,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817096995] [2021-11-20 06:24:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:45,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:24:45,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:24:45,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:24:45,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:24:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:45,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 06:24:45,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:24:45,443 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 06:24:45,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:24:45,468 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 06:24:45,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:24:45,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817096995] [2021-11-20 06:24:45,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817096995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:24:45,471 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:24:45,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:24:45,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538853082] [2021-11-20 06:24:45,489 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:24:45,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:24:45,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:24:45,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:24:45,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:24:45,559 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:24:45,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:24:45,589 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-20 06:24:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:24:45,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2021-11-20 06:24:45,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:24:45,625 INFO L225 Difference]: With dead ends: 17 [2021-11-20 06:24:45,625 INFO L226 Difference]: Without dead ends: 7 [2021-11-20 06:24:45,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:24:45,634 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:24:45,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:24:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-20 06:24:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-20 06:24:45,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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 06:24:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-20 06:24:45,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-20 06:24:45,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:24:45,681 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-20 06:24:45,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 06:24:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-20 06:24:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 06:24:45,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:24:45,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:24:45,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:24:45,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:24:45,904 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:24:45,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:24:45,906 INFO L85 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-11-20 06:24:45,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:24:45,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431556662] [2021-11-20 06:24:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:24:45,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:24:45,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:24:45,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:24:45,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:24:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:24:46,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:24:46,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:25:03,251 WARN L227 SmtUtils]: Spent 7.04s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:25:04,155 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 06:25:04,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:25:39,544 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 06:25:39,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:25:39,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431556662] [2021-11-20 06:25:39,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431556662] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:25:39,546 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:25:39,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 06:25:39,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630475855] [2021-11-20 06:25:39,547 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:25:39,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:25:39,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:25:39,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:25:39,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2021-11-20 06:25:39,550 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 06:25:41,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:25:42,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 06:25:45,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 06:25:46,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 06:26:07,681 WARN L227 SmtUtils]: Spent 20.05s on a formula simplification. DAG size of input: 33 DAG size of output: 23 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:26:07,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:26:07,682 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-11-20 06:26:07,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:26:07,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) Word has length 6 [2021-11-20 06:26:07,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:26:07,684 INFO L225 Difference]: With dead ends: 7 [2021-11-20 06:26:07,684 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 06:26:07,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.5s TimeCoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2021-11-20 06:26:07,687 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:26:07,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-20 06:26:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 06:26:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 06:26:07,690 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 06:26:07,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 06:26:07,690 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-11-20 06:26:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:26:07,691 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:26:07,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 06:26:07,692 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:26:07,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 06:26:07,695 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:26:07,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:26:07,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:26:07,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 06:26:07,918 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 06:26:07,918 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 06:26:07,919 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 06:26:07,919 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 06:26:07,919 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-20 06:26:07,920 INFO L858 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-11-20 06:26:07,921 INFO L858 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-11-20 06:26:07,921 INFO L858 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-11-20 06:26:07,921 INFO L858 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2021-11-20 06:26:07,922 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 15) no Hoare annotation was computed. [2021-11-20 06:26:07,929 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 06:26:07,933 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:26:07,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:26:07 BoogieIcfgContainer [2021-11-20 06:26:07,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:26:07,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:26:07,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:26:07,951 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:26:07,951 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:24:45" (3/4) ... [2021-11-20 06:26:07,955 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 06:26:07,969 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-20 06:26:07,969 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-20 06:26:07,969 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 06:26:07,970 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 06:26:08,021 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:26:08,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:26:08,033 INFO L158 Benchmark]: Toolchain (without parser) took 83735.36ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 27.3MB in the beginning and 31.5MB in the end (delta: -4.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-11-20 06:26:08,033 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 50.3MB. Free memory is still 31.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:26:08,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.23ms. Allocated memory is still 50.3MB. Free memory was 27.1MB in the beginning and 28.5MB in the end (delta: -1.4MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-11-20 06:26:08,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.41ms. Allocated memory is still 50.3MB. Free memory was 28.5MB in the beginning and 27.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:26:08,035 INFO L158 Benchmark]: Boogie Preprocessor took 28.59ms. Allocated memory is still 50.3MB. Free memory was 27.1MB in the beginning and 26.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:26:08,038 INFO L158 Benchmark]: RCFGBuilder took 489.60ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 26.0MB in the beginning and 41.4MB in the end (delta: -15.5MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-11-20 06:26:08,038 INFO L158 Benchmark]: TraceAbstraction took 82823.60ms. Allocated memory is still 62.9MB. Free memory was 40.9MB in the beginning and 34.0MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-11-20 06:26:08,039 INFO L158 Benchmark]: Witness Printer took 82.03ms. Allocated memory is still 62.9MB. Free memory was 34.0MB in the beginning and 31.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:26:08,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 50.3MB. Free memory is still 31.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.23ms. Allocated memory is still 50.3MB. Free memory was 27.1MB in the beginning and 28.5MB in the end (delta: -1.4MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.41ms. Allocated memory is still 50.3MB. Free memory was 28.5MB in the beginning and 27.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.59ms. Allocated memory is still 50.3MB. Free memory was 27.1MB in the beginning and 26.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 489.60ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 26.0MB in the beginning and 41.4MB in the end (delta: -15.5MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * TraceAbstraction took 82823.60ms. Allocated memory is still 62.9MB. Free memory was 40.9MB in the beginning and 34.0MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Witness Printer took 82.03ms. Allocated memory is still 62.9MB. Free memory was 34.0MB in the beginning and 31.5MB in the end (delta: 2.4MB). 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: 14]: 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 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 82.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 11 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 53.6s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 4 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 06:26:08,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd91edc-413b-42d4-bda9-9ca414a5a34d/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