./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3 --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 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 ................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3 --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 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 ........................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:00:22,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:00:22,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:00:22,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:00:22,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:00:23,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:00:23,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:00:23,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:00:23,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:00:23,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:00:23,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:00:23,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:00:23,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:00:23,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:00:23,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:00:23,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:00:23,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:00:23,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:00:23,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:00:23,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:00:23,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:00:23,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:00:23,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:00:23,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:00:23,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:00:23,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:00:23,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:00:23,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:00:23,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:00:23,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:00:23,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:00:23,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:00:23,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:00:23,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:00:23,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:00:23,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:00:23,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:00:23,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:00:23,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:00:23,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:00:23,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:00:23,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:00:23,100 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:00:23,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:00:23,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:00:23,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:00:23,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:00:23,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:00:23,103 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:00:23,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:00:23,104 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:00:23,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:00:23,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:00:23,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:00:23,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:00:23,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:00:23,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:00:23,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:00:23,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:00:23,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:00:23,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:00:23,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:00:23,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:00:23,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:00:23,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:00:23,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:00:23,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:00:23,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:00:23,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:00:23,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:00:23,109 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:00:23,110 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:00:23,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:00:23,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:00:23,111 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_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 [2021-10-15 20:00:23,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:00:23,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:00:23,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:00:23,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:00:23,538 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:00:23,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-15 20:00:23,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/data/e93d6fd2d/294fac59d07b44b2919e43e654bb3b1a/FLAG6504dfe73 [2021-10-15 20:00:24,224 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:00:24,226 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-15 20:00:24,240 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/data/e93d6fd2d/294fac59d07b44b2919e43e654bb3b1a/FLAG6504dfe73 [2021-10-15 20:00:24,594 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/data/e93d6fd2d/294fac59d07b44b2919e43e654bb3b1a [2021-10-15 20:00:24,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:00:24,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:00:24,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:00:24,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:00:24,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:00:24,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363c151f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24, skipping insertion in model container [2021-10-15 20:00:24,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:00:24,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:00:24,844 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-15 20:00:24,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:00:24,866 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:00:24,879 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-15 20:00:24,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:00:24,897 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:00:24,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24 WrapperNode [2021-10-15 20:00:24,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:00:24,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:00:24,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:00:24,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:00:24,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:00:24,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:00:24,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:00:24,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:00:24,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:00:24,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:00:24,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:00:24,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:00:24,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (1/1) ... [2021-10-15 20:00:24,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:00:25,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:00:25,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:00:25,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:00:25,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:00:25,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:00:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:00:25,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:00:25,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:00:25,300 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 20:00:25,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:00:25 BoogieIcfgContainer [2021-10-15 20:00:25,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:00:25,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:00:25,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:00:25,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:00:25,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:00:24" (1/3) ... [2021-10-15 20:00:25,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d00c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:00:25, skipping insertion in model container [2021-10-15 20:00:25,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:24" (2/3) ... [2021-10-15 20:00:25,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d00c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:00:25, skipping insertion in model container [2021-10-15 20:00:25,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:00:25" (3/3) ... [2021-10-15 20:00:25,320 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2021-10-15 20:00:25,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:00:25,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:00:25,382 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:00:25,390 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, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:00:25,390 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:00:25,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:00:25,420 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 20:00:25,420 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:00:25,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 20:00:25,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:00:25,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 20:00:25,428 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 20:00:25,429 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:00:25,429 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:00:25,430 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 20:00:25,430 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:00:25,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:00:25,437 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-15 20:00:25,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:00:25,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112614684] [2021-10-15 20:00:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:00:25,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:00:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:00:25,556 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:00:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:00:25,597 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:00:25,599 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:00:25,601 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:00:25,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:00:25,611 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:00:25,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:00:25 BoogieIcfgContainer [2021-10-15 20:00:25,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:00:25,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:00:25,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:00:25,629 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:00:25,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:00:25" (3/4) ... [2021-10-15 20:00:25,633 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 20:00:25,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:00:25,636 INFO L168 Benchmark]: Toolchain (without parser) took 1032.94 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 54.6 MB in the beginning and 60.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:00:25,637 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 53.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:00:25,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.05 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 54.4 MB in the beginning and 86.0 MB in the end (delta: -31.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:00:25,639 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.61 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:00:25,640 INFO L168 Benchmark]: Boogie Preprocessor took 39.54 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 83.5 MB in the end (delta: 925.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:00:25,640 INFO L168 Benchmark]: RCFGBuilder took 321.09 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 74.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:00:25,641 INFO L168 Benchmark]: TraceAbstraction took 323.49 ms. Allocated memory is still 109.1 MB. Free memory was 74.4 MB in the beginning and 60.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 20:00:25,642 INFO L168 Benchmark]: Witness Printer took 5.32 ms. Allocated memory is still 109.1 MB. Free memory was 60.7 MB in the beginning and 60.5 MB in the end (delta: 229.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:00:25,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory was 70.6 MB in the beginning and 70.6 MB in the end (delta: 53.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.05 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 54.4 MB in the beginning and 86.0 MB in the end (delta: -31.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.61 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 84.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.54 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 83.5 MB in the end (delta: 925.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 321.09 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 74.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 323.49 ms. Allocated memory is still 109.1 MB. Free memory was 74.4 MB in the beginning and 60.9 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.32 ms. Allocated memory is still 109.1 MB. Free memory was 60.7 MB in the beginning and 60.5 MB in the end (delta: 229.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6]: 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 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e8f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 230.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 36.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.1ms SsaConstructionTime, 40.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-10-15 20:00:25,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:00:28,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:00:28,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:00:28,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:00:28,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:00:28,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:00:28,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:00:28,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:00:28,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:00:28,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:00:28,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:00:28,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:00:28,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:00:28,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:00:28,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:00:28,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:00:28,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:00:28,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:00:28,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:00:28,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:00:28,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:00:28,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:00:28,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:00:28,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:00:28,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:00:28,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:00:28,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:00:28,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:00:28,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:00:28,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:00:28,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:00:28,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:00:28,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:00:28,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:00:28,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:00:28,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:00:28,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:00:28,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:00:28,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:00:28,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:00:28,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:00:28,416 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 20:00:28,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:00:28,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:00:28,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:00:28,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:00:28,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:00:28,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:00:28,478 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:00:28,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:00:28,479 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:00:28,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:00:28,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:00:28,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:00:28,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:00:28,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:00:28,481 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 20:00:28,481 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 20:00:28,482 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:00:28,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:00:28,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:00:28,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:00:28,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:00:28,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:00:28,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:00:28,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:00:28,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:00:28,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:00:28,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:00:28,485 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 20:00:28,485 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 20:00:28,485 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:00:28,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:00:28,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:00:28,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:00:28,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 20:00:28,487 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_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6904bf6d43d7b400ac9a6f6c8ecd92ebae2bb440 [2021-10-15 20:00:28,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:00:28,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:00:28,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:00:28,911 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:00:28,912 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:00:28,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-15 20:00:28,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/data/7f1fe7595/0e55a80de52a46b8934f658e318850e1/FLAGd128aa212 [2021-10-15 20:00:29,637 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:00:29,638 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/sv-benchmarks/c/float-benchs/addsub_float_inexact.c [2021-10-15 20:00:29,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/data/7f1fe7595/0e55a80de52a46b8934f658e318850e1/FLAGd128aa212 [2021-10-15 20:00:30,012 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/data/7f1fe7595/0e55a80de52a46b8934f658e318850e1 [2021-10-15 20:00:30,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:00:30,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:00:30,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:00:30,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:00:30,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:00:30,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de6e463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30, skipping insertion in model container [2021-10-15 20:00:30,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:00:30,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:00:30,254 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-15 20:00:30,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:00:30,280 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:00:30,294 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/sv-benchmarks/c/float-benchs/addsub_float_inexact.c[394,407] [2021-10-15 20:00:30,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:00:30,313 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:00:30,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30 WrapperNode [2021-10-15 20:00:30,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:00:30,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:00:30,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:00:30,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:00:30,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:00:30,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:00:30,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:00:30,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:00:30,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:00:30,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:00:30,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:00:30,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:00:30,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (1/1) ... [2021-10-15 20:00:30,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:00:30,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:00:30,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:00:30,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:00:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:00:30,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:00:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 20:00:30,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:00:31,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:00:31,015 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 20:00:31,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:00:31 BoogieIcfgContainer [2021-10-15 20:00:31,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:00:31,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:00:31,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:00:31,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:00:31,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:00:30" (1/3) ... [2021-10-15 20:00:31,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcc66b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:00:31, skipping insertion in model container [2021-10-15 20:00:31,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:00:30" (2/3) ... [2021-10-15 20:00:31,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fcc66b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:00:31, skipping insertion in model container [2021-10-15 20:00:31,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:00:31" (3/3) ... [2021-10-15 20:00:31,027 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_inexact.c [2021-10-15 20:00:31,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:00:31,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:00:31,088 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:00:31,096 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, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 20:00:31,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:00:31,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:00:31,127 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 20:00:31,127 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:00:31,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 20:00:31,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 20:00:31,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 20:00:31,136 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 20:00:31,136 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:00:31,137 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:00:31,138 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 20:00:31,138 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:00:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:00:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-15 20:00:31,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 20:00:31,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476911012] [2021-10-15 20:00:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:00:31,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 20:00:31,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 20:00:31,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 20:00:31,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 20:00:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:00:31,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 20:00:31,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:00:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:00:31,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 20:00:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:00:32,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 20:00:32,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476911012] [2021-10-15 20:00:32,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476911012] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 20:00:32,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:00:32,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 20:00:32,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782832409] [2021-10-15 20:00:32,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:00:32,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 20:00:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:00:32,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:00:32,071 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 9 [2021-10-15 20:00:32,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 4 transitions, 8 flow. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:00:32,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:00:32,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 9 [2021-10-15 20:00:32,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:00:32,203 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-10-15 20:00:32,203 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:00:32,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6 conditions, 2 events. 0/2 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/3 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-10-15 20:00:32,204 INFO L132 encePairwiseOnDemand]: 6/9 looper letters, 0 selfloop transitions, 0 changer transitions 2/2 dead transitions. [2021-10-15 20:00:32,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 6 places, 2 transitions, 8 flow [2021-10-15 20:00:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:00:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:00:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-10-15 20:00:32,216 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2021-10-15 20:00:32,216 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 19 transitions. [2021-10-15 20:00:32,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 19 transitions. [2021-10-15 20:00:32,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:00:32,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 19 transitions. [2021-10-15 20:00:32,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:00:32,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:00:32,228 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:00:32,230 INFO L186 Difference]: Start difference. First operand has 5 places, 4 transitions, 8 flow. Second operand 4 states and 19 transitions. [2021-10-15 20:00:32,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 6 places, 2 transitions, 8 flow [2021-10-15 20:00:32,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6 places, 2 transitions, 8 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:00:32,235 INFO L242 Difference]: Finished difference. Result has 6 places, 0 transitions, 0 flow [2021-10-15 20:00:32,237 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=9, PETRI_DIFFERENCE_MINUEND_FLOW=4, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=6, PETRI_TRANSITIONS=0} [2021-10-15 20:00:32,238 INFO L334 CegarLoopForPetriNet]: 5 programPoint places, 1 predicate places. [2021-10-15 20:00:32,239 INFO L470 AbstractCegarLoop]: Abstraction has has 6 places, 0 transitions, 0 flow [2021-10-15 20:00:32,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:00:32,241 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:00:32,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-15 20:00:32,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 20:00:32,469 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:00:32,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:00:32 BoogieIcfgContainer [2021-10-15 20:00:32,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:00:32,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:00:32,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:00:32,474 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:00:32,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:00:31" (3/4) ... [2021-10-15 20:00:32,491 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:00:32,515 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 20:00:32,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 20:00:32,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 20:00:32,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:00:32,550 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:00:32,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:00:32,552 INFO L168 Benchmark]: Toolchain (without parser) took 2534.78 ms. Allocated memory is still 73.4 MB. Free memory was 51.1 MB in the beginning and 40.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:00:32,553 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 34.3 MB in the beginning and 34.3 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:00:32,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.81 ms. Allocated memory is still 73.4 MB. Free memory was 50.8 MB in the beginning and 41.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:00:32,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.55 ms. Allocated memory is still 73.4 MB. Free memory was 41.1 MB in the beginning and 56.2 MB in the end (delta: -15.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:00:32,555 INFO L168 Benchmark]: Boogie Preprocessor took 44.13 ms. Allocated memory is still 73.4 MB. Free memory was 56.2 MB in the beginning and 55.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:00:32,556 INFO L168 Benchmark]: RCFGBuilder took 582.66 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 46.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:00:32,556 INFO L168 Benchmark]: TraceAbstraction took 1453.68 ms. Allocated memory is still 73.4 MB. Free memory was 45.8 MB in the beginning and 42.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2021-10-15 20:00:32,557 INFO L168 Benchmark]: Witness Printer took 76.66 ms. Allocated memory is still 73.4 MB. Free memory was 42.4 MB in the beginning and 40.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:00:32,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 54.5 MB. Free memory was 34.3 MB in the beginning and 34.3 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.81 ms. Allocated memory is still 73.4 MB. Free memory was 50.8 MB in the beginning and 41.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.55 ms. Allocated memory is still 73.4 MB. Free memory was 41.1 MB in the beginning and 56.2 MB in the end (delta: -15.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.13 ms. Allocated memory is still 73.4 MB. Free memory was 56.2 MB in the beginning and 55.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 582.66 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 46.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1453.68 ms. Allocated memory is still 73.4 MB. Free memory was 45.8 MB in the beginning and 42.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Witness Printer took 76.66 ms. Allocated memory is still 73.4 MB. Free memory was 42.4 MB in the beginning and 40.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1386.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 173.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 37.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 1 SDslu, 2 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 325.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.7ms SsaConstructionTime, 113.8ms SatisfiabilityAnalysisTime, 665.5ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 6 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-10-15 20:00:32,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b235ed08-b43b-4585-8d6a-e22deb2eb2ac/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...