./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:06:59,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:06:59,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:06:59,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:06:59,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:06:59,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:06:59,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:06:59,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:06:59,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:06:59,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:06:59,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:06:59,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:06:59,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:06:59,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:06:59,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:06:59,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:06:59,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:06:59,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:06:59,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:06:59,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:06:59,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:06:59,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:06:59,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:06:59,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:06:59,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:06:59,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:06:59,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:06:59,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:06:59,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:06:59,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:06:59,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:06:59,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:06:59,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:06:59,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:06:59,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:06:59,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:06:59,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:06:59,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:06:59,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:06:59,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:06:59,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:06:59,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:06:59,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:06:59,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:06:59,233 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:06:59,233 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:06:59,233 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:06:59,233 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:06:59,234 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:06:59,234 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:06:59,240 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:06:59,241 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:06:59,242 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:06:59,242 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:06:59,242 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:06:59,242 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:06:59,243 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:06:59,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:06:59,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:06:59,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:06:59,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:06:59,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:06:59,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:06:59,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:06:59,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:06:59,245 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:06:59,245 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:06:59,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:06:59,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:06:59,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:06:59,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:06:59,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:06:59,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:06:59,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:06:59,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:06:59,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:06:59,249 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:06:59,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:06:59,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:06:59,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:06:59,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:06:59,250 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 [2021-11-03 04:06:59,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:06:59,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:06:59,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:06:59,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:06:59,556 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:06:59,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-11-03 04:06:59,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/data/634ac1fdd/d8194c73fe574e5cab0326f287e76667/FLAGbc9f60e81 [2021-11-03 04:07:00,044 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:07:00,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-11-03 04:07:00,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/data/634ac1fdd/d8194c73fe574e5cab0326f287e76667/FLAGbc9f60e81 [2021-11-03 04:07:00,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/data/634ac1fdd/d8194c73fe574e5cab0326f287e76667 [2021-11-03 04:07:00,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:07:00,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:07:00,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:07:00,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:07:00,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:07:00,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6306fdb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00, skipping insertion in model container [2021-11-03 04:07:00,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:07:00,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:07:00,662 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-11-03 04:07:00,666 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-11-03 04:07:00,667 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-11-03 04:07:00,668 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-11-03 04:07:00,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:07:00,700 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:07:00,715 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-11-03 04:07:00,716 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-11-03 04:07:00,717 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-11-03 04:07:00,719 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-11-03 04:07:00,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:07:00,734 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:07:00,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00 WrapperNode [2021-11-03 04:07:00,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:07:00,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:07:00,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:07:00,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:07:00,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:07:00,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:07:00,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:07:00,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:07:00,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:07:00,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:07:00,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:07:00,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:07:00,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (1/1) ... [2021-11-03 04:07:00,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:07:00,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:07:00,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:07:00,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:07:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:07:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:07:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:07:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:07:01,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:07:01,160 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 04:07:01,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:01 BoogieIcfgContainer [2021-11-03 04:07:01,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:07:01,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:07:01,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:07:01,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:07:01,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:07:00" (1/3) ... [2021-11-03 04:07:01,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2238fc70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:01, skipping insertion in model container [2021-11-03 04:07:01,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:00" (2/3) ... [2021-11-03 04:07:01,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2238fc70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:01, skipping insertion in model container [2021-11-03 04:07:01,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:01" (3/3) ... [2021-11-03 04:07:01,171 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2021-11-03 04:07:01,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:07:01,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 04:07:01,280 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:07:01,287 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=FINITE_AUTOMATA, 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 [2021-11-03 04:07:01,287 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 04:07:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 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) [2021-11-03 04:07:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:07:01,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:01,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:07:01,307 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:07:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:01,313 INFO L85 PathProgramCache]: Analyzing trace with hash 68392, now seen corresponding path program 1 times [2021-11-03 04:07:01,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:07:01,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894894240] [2021-11-03 04:07:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:01,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:07:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:07:01,421 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:07:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:07:01,484 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:07:01,487 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:07:01,488 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:07:01,491 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:07:01,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:07:01,492 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:07:01,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:07:01,499 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 04:07:01,502 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:07:01,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:07:01 BoogieIcfgContainer [2021-11-03 04:07:01,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:07:01,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:07:01,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:07:01,525 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:07:01,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:01" (3/4) ... [2021-11-03 04:07:01,528 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:07:01,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:07:01,533 INFO L168 Benchmark]: Toolchain (without parser) took 1080.84 ms. Allocated memory is still 109.1 MB. Free memory was 69.8 MB in the beginning and 58.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:01,534 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:07:01,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.19 ms. Allocated memory is still 109.1 MB. Free memory was 69.5 MB in the beginning and 83.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:01,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.71 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:01,539 INFO L168 Benchmark]: Boogie Preprocessor took 30.38 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 81.5 MB in the end (delta: 726.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:07:01,540 INFO L168 Benchmark]: RCFGBuilder took 359.93 ms. Allocated memory is still 109.1 MB. Free memory was 81.5 MB in the beginning and 71.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:01,545 INFO L168 Benchmark]: TraceAbstraction took 356.59 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:01,546 INFO L168 Benchmark]: Witness Printer took 4.34 ms. Allocated memory is still 109.1 MB. Free memory was 58.7 MB in the beginning and 58.4 MB in the end (delta: 280.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:07:01,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.19 ms. Allocated memory is still 109.1 MB. Free memory was 69.5 MB in the beginning and 83.8 MB in the end (delta: -14.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.71 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.38 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 81.5 MB in the end (delta: 726.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 359.93 ms. Allocated memory is still 109.1 MB. Free memory was 81.5 MB in the beginning and 71.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 356.59 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.34 ms. Allocated memory is still 109.1 MB. Free memory was 58.7 MB in the beginning and 58.4 MB in the end (delta: 280.4 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, 0.0s 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: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L [L12] COND TRUE !(a==1.25) [L12] reach_error() - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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 [2021-11-03 04:07:01,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/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_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:07:04,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:07:04,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:07:04,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:07:04,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:07:04,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:07:04,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:07:04,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:07:04,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:07:04,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:07:04,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:07:04,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:07:04,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:07:04,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:07:04,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:07:04,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:07:04,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:07:04,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:07:04,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:07:04,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:07:04,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:07:04,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:07:04,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:07:04,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:07:04,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:07:04,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:07:04,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:07:04,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:07:04,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:07:04,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:07:04,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:07:04,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:07:04,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:07:04,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:07:04,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:07:04,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:07:04,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:07:04,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:07:04,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:07:04,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:07:04,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:07:04,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:07:04,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:07:04,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:07:04,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:07:04,223 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:07:04,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:07:04,223 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:07:04,223 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:07:04,224 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:07:04,224 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:07:04,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:07:04,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:07:04,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:07:04,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:07:04,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:07:04,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:07:04,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:07:04,226 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:07:04,227 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:07:04,227 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:07:04,227 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:07:04,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:07:04,227 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:07:04,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:07:04,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:07:04,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:07:04,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:07:04,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:07:04,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:07:04,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:07:04,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:07:04,230 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:07:04,230 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:07:04,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:07:04,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:07:04,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:07:04,231 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcfb96d73d3159acff3d0fedafe635e3c1fa3ca1ecc4b177029539dd1ac5d911 [2021-11-03 04:07:04,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:07:04,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:07:04,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:07:04,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:07:04,652 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:07:04,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-11-03 04:07:04,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/data/f75c07716/46fe05cab2d749078af79750d15b7aa5/FLAG69e7b0111 [2021-11-03 04:07:05,159 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:07:05,160 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-11-03 04:07:05,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/data/f75c07716/46fe05cab2d749078af79750d15b7aa5/FLAG69e7b0111 [2021-11-03 04:07:05,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/data/f75c07716/46fe05cab2d749078af79750d15b7aa5 [2021-11-03 04:07:05,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:07:05,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:07:05,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:07:05,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:07:05,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:07:05,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114b6715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05, skipping insertion in model container [2021-11-03 04:07:05,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:07:05,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:07:05,344 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-11-03 04:07:05,348 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-11-03 04:07:05,349 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-11-03 04:07:05,350 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-11-03 04:07:05,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:07:05,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:07:05,382 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-11-03 04:07:05,383 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-11-03 04:07:05,384 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-11-03 04:07:05,387 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_a54b5f34-e0d9-413b-8a09-9cff1f241837/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-11-03 04:07:05,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:07:05,417 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:07:05,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05 WrapperNode [2021-11-03 04:07:05,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:07:05,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:07:05,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:07:05,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:07:05,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:07:05,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:07:05,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:07:05,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:07:05,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:07:05,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:07:05,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:07:05,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:07:05,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (1/1) ... [2021-11-03 04:07:05,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:07:05,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:07:05,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:07:05,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:07:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:07:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:07:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:07:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:07:06,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:07:06,192 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 04:07:06,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:06 BoogieIcfgContainer [2021-11-03 04:07:06,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:07:06,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:07:06,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:07:06,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:07:06,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:07:05" (1/3) ... [2021-11-03 04:07:06,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e2cc1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:06, skipping insertion in model container [2021-11-03 04:07:06,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:05" (2/3) ... [2021-11-03 04:07:06,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e2cc1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:06, skipping insertion in model container [2021-11-03 04:07:06,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:06" (3/3) ... [2021-11-03 04:07:06,204 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2021-11-03 04:07:06,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:07:06,213 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 04:07:06,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:07:06,285 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=FINITE_AUTOMATA, 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 [2021-11-03 04:07:06,286 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 04:07:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-11-03 04:07:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:07:06,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:06,310 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:07:06,311 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:07:06,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:06,317 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-11-03 04:07:06,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:06,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830026605] [2021-11-03 04:07:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:06,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:06,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:06,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:06,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:07:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:06,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:07:06,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:06,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:07,067 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:07,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830026605] [2021-11-03 04:07:07,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830026605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:07,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:07,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:07:07,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152048996] [2021-11-03 04:07:07,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:07:07,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:07,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:07:07,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:07,094 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-03 04:07:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:07,190 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-03 04:07:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:07:07,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-11-03 04:07:07,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:07,200 INFO L225 Difference]: With dead ends: 35 [2021-11-03 04:07:07,201 INFO L226 Difference]: Without dead ends: 15 [2021-11-03 04:07:07,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-03 04:07:07,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-03 04:07:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 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) [2021-11-03 04:07:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-11-03 04:07:07,232 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2021-11-03 04:07:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:07,233 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-11-03 04:07:07,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-03 04:07:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-11-03 04:07:07,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:07:07,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:07,234 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:07:07,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:07,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:07,450 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:07:07,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2021-11-03 04:07:07,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:07,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945785822] [2021-11-03 04:07:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:07,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:07,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:07,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:07,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:07:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:07,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:07:07,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:07,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:07,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:07,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945785822] [2021-11-03 04:07:07,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945785822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:07,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:07,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:07:07,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590126415] [2021-11-03 04:07:07,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:07:07,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:07,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:07:07,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:07,563 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-11-03 04:07:07,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:07,666 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-11-03 04:07:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:07:07,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2021-11-03 04:07:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:07,668 INFO L225 Difference]: With dead ends: 15 [2021-11-03 04:07:07,669 INFO L226 Difference]: Without dead ends: 13 [2021-11-03 04:07:07,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:07,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-03 04:07:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-03 04:07:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 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) [2021-11-03 04:07:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-11-03 04:07:07,675 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2021-11-03 04:07:07,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:07,675 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-11-03 04:07:07,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-11-03 04:07:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-11-03 04:07:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:07:07,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:07,682 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:07,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:07,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:07,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:07:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2021-11-03 04:07:07,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:07,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772264948] [2021-11-03 04:07:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:07,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:07,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:07,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:07,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:07:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:07,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:07:07,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:07,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:08,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:08,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772264948] [2021-11-03 04:07:08,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772264948] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:08,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:08,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:07:08,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689637256] [2021-11-03 04:07:08,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:07:08,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:08,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:07:08,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,028 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-03 04:07:08,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:08,165 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-11-03 04:07:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:07:08,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-11-03 04:07:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:08,167 INFO L225 Difference]: With dead ends: 13 [2021-11-03 04:07:08,167 INFO L226 Difference]: Without dead ends: 11 [2021-11-03 04:07:08,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-03 04:07:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-03 04:07:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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) [2021-11-03 04:07:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-11-03 04:07:08,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2021-11-03 04:07:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:08,171 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-11-03 04:07:08,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-03 04:07:08,171 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-11-03 04:07:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:07:08,172 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:07:08,172 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:07:08,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:08,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:08,383 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 04:07:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:07:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2021-11-03 04:07:08,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:07:08,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168671860] [2021-11-03 04:07:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:07:08,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:07:08,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:07:08,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:07:08,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:07:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:07:08,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:07:08,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:07:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:08,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:07:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:07:08,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:07:08,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168671860] [2021-11-03 04:07:08,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168671860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:07:08,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:07:08,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:07:08,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015148148] [2021-11-03 04:07:08,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:07:08,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:07:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:07:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,537 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-03 04:07:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:07:08,670 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-11-03 04:07:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:07:08,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-11-03 04:07:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:07:08,672 INFO L225 Difference]: With dead ends: 11 [2021-11-03 04:07:08,672 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:07:08,672 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:07:08,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:07:08,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:07:08,672 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) [2021-11-03 04:07:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:07:08,673 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-11-03 04:07:08,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:07:08,673 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:07:08,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-11-03 04:07:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:07:08,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:07:08,676 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:07:08,677 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:07:08,677 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:07:08,678 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:07:08,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:07:08,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:07:08,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:07:08,894 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:07:08,894 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-11-03 04:07:08,895 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-11-03 04:07:08,895 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-03 04:07:08,895 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2021-11-03 04:07:08,895 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-03 04:07:08,896 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-11-03 04:07:08,896 INFO L857 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-11-03 04:07:08,896 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-11-03 04:07:08,897 INFO L857 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-11-03 04:07:08,897 INFO L857 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2021-11-03 04:07:08,898 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 24) no Hoare annotation was computed. [2021-11-03 04:07:08,898 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-03 04:07:08,901 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:07:08,901 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-03 04:07:08,901 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-03 04:07:08,902 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-03 04:07:08,902 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-11-03 04:07:08,902 INFO L857 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-11-03 04:07:08,902 INFO L857 garLoopResultBuilder]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-11-03 04:07:08,905 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-03 04:07:08,907 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:07:08,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:07:08 BoogieIcfgContainer [2021-11-03 04:07:08,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:07:08,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:07:08,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:07:08,911 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:07:08,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:06" (3/4) ... [2021-11-03 04:07:08,927 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:07:08,934 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-03 04:07:08,934 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-03 04:07:08,935 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 04:07:08,935 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:07:08,978 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:07:08,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:07:08,983 INFO L168 Benchmark]: Toolchain (without parser) took 3798.19 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 39.0 MB in the beginning and 56.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:08,983 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory is still 40.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:07:08,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.81 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 42.3 MB in the end (delta: -3.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:08,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.93 ms. Allocated memory is still 58.7 MB. Free memory was 42.3 MB in the beginning and 40.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:08,985 INFO L168 Benchmark]: Boogie Preprocessor took 24.93 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 39.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:07:08,985 INFO L168 Benchmark]: RCFGBuilder took 689.44 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 30.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:08,989 INFO L168 Benchmark]: TraceAbstraction took 2714.77 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 29.9 MB in the beginning and 58.8 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:07:08,990 INFO L168 Benchmark]: Witness Printer took 70.10 ms. Allocated memory is still 86.0 MB. Free memory was 58.8 MB in the beginning and 56.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:07:08,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 58.7 MB. Free memory is still 40.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 233.81 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 42.3 MB in the end (delta: -3.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.93 ms. Allocated memory is still 58.7 MB. Free memory was 42.3 MB in the beginning and 40.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.93 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 39.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 689.44 ms. Allocated memory is still 58.7 MB. Free memory was 39.7 MB in the beginning and 30.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2714.77 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 29.9 MB in the beginning and 58.8 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 70.10 ms. Allocated memory is still 86.0 MB. Free memory was 58.8 MB in the beginning and 56.1 MB in the end (delta: 2.7 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, 0.0s 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 23]: 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, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 14 SDslu, 5 SDs, 0 SdLazy, 37 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 4 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, 0.8s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 8 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-03 04:07:09,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54b5f34-e0d9-413b-8a09-9cff1f241837/bin/utaipan-aC7eJsxGYH/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