./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V --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 0fdb430a563564dba34d4fe6c6ffeed490245913891172fda591ae44bb309801 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:19:35,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:19:35,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:19:35,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:19:35,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:19:35,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:19:35,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:19:35,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:19:35,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:19:35,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:19:35,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:19:35,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:19:35,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:19:35,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:19:35,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:19:35,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:19:35,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:19:35,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:19:35,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:19:35,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:19:35,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:19:35,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:19:35,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:19:35,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:19:35,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:19:35,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:19:35,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:19:35,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:19:35,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:19:35,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:19:35,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:19:35,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:19:35,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:19:35,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:19:35,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:19:35,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:19:35,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:19:35,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:19:35,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:19:35,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:19:35,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:19:35,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:19:35,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:19:35,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:19:35,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:19:35,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:19:35,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:19:35,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:19:35,976 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:19:35,976 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:19:35,976 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:19:35,977 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:19:35,977 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:19:35,977 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:19:35,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:19:35,978 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:19:35,978 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:19:35,979 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:19:35,979 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:19:35,979 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:19:35,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:19:35,980 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:19:35,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:19:35,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:19:35,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:19:35,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:19:35,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:19:35,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:19:35,982 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:19:35,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:19:35,983 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:19:35,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:19:35,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:19:35,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:19:35,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:19:35,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:19:35,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:19:35,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:19:35,986 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:19:35,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:19:35,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:19:35,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:19:35,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:19:35,987 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_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdb430a563564dba34d4fe6c6ffeed490245913891172fda591ae44bb309801 [2021-11-23 03:19:36,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:19:36,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:19:36,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:19:36,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:19:36,290 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:19:36,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c [2021-11-23 03:19:36,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/data/802c47798/01c641e5c3054d39934177cc8ae6389f/FLAG92b6915f2 [2021-11-23 03:19:36,962 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:19:36,962 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c [2021-11-23 03:19:36,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/data/802c47798/01c641e5c3054d39934177cc8ae6389f/FLAG92b6915f2 [2021-11-23 03:19:37,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/data/802c47798/01c641e5c3054d39934177cc8ae6389f [2021-11-23 03:19:37,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:19:37,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:19:37,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:19:37,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:19:37,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:19:37,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265dd7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37, skipping insertion in model container [2021-11-23 03:19:37,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:19:37,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:19:37,628 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c[1997,2010] [2021-11-23 03:19:37,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c[2366,2379] [2021-11-23 03:19:37,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:19:37,687 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:19:37,706 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c[1997,2010] [2021-11-23 03:19:37,708 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c[2366,2379] [2021-11-23 03:19:37,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:19:37,755 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:19:37,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37 WrapperNode [2021-11-23 03:19:37,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:19:37,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:19:37,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:19:37,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:19:37,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,807 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2021-11-23 03:19:37,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:19:37,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:19:37,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:19:37,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:19:37,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:19:37,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:19:37,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:19:37,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:19:37,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (1/1) ... [2021-11-23 03:19:37,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:19:37,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:19:37,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:19:37,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:19:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:19:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-23 03:19:37,927 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-23 03:19:37,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:19:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:19:37,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:19:37,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:19:37,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:19:38,012 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:19:38,014 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:19:38,352 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:19:38,451 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:19:38,452 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:19:38,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:38 BoogieIcfgContainer [2021-11-23 03:19:38,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:19:38,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:19:38,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:19:38,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:19:38,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:19:37" (1/3) ... [2021-11-23 03:19:38,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42630a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:19:38, skipping insertion in model container [2021-11-23 03:19:38,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:37" (2/3) ... [2021-11-23 03:19:38,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42630a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:19:38, skipping insertion in model container [2021-11-23 03:19:38,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:38" (3/3) ... [2021-11-23 03:19:38,467 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_2a.c.cil.c [2021-11-23 03:19:38,482 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:19:38,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:19:38,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:19:38,570 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 [2021-11-23 03:19:38,571 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:19:38,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:19:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 03:19:38,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:19:38,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 03:19:38,596 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:19:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:19:38,602 INFO L85 PathProgramCache]: Analyzing trace with hash 7146571, now seen corresponding path program 1 times [2021-11-23 03:19:38,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:19:38,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843491636] [2021-11-23 03:19:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:19:38,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:19:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:19:38,721 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:19:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:19:38,759 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:19:38,762 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:19:38,763 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 03:19:38,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 03:19:38,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:19:38,771 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 03:19:38,774 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:19:38,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:19:38 BoogieIcfgContainer [2021-11-23 03:19:38,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:19:38,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:19:38,796 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:19:38,796 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:19:38,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:38" (3/4) ... [2021-11-23 03:19:38,800 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 03:19:38,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:19:38,801 INFO L158 Benchmark]: Toolchain (without parser) took 1487.41ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 72.4MB in the beginning and 109.7MB in the end (delta: -37.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:19:38,802 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory was 59.4MB in the beginning and 59.4MB in the end (delta: 47.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:19:38,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.51ms. Allocated memory is still 104.9MB. Free memory was 72.2MB in the beginning and 76.2MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:19:38,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.83ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 74.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:19:38,805 INFO L158 Benchmark]: Boogie Preprocessor took 33.61ms. Allocated memory is still 104.9MB. Free memory was 74.1MB in the beginning and 72.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:19:38,805 INFO L158 Benchmark]: RCFGBuilder took 612.67ms. Allocated memory is still 104.9MB. Free memory was 72.7MB in the beginning and 56.3MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 03:19:38,806 INFO L158 Benchmark]: TraceAbstraction took 336.84ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 55.6MB in the beginning and 109.7MB in the end (delta: -54.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:19:38,807 INFO L158 Benchmark]: Witness Printer took 4.87ms. Allocated memory is still 140.5MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:19:38,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory was 59.4MB in the beginning and 59.4MB in the end (delta: 47.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.51ms. Allocated memory is still 104.9MB. Free memory was 72.2MB in the beginning and 76.2MB in the end (delta: -4.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.83ms. Allocated memory is still 104.9MB. Free memory was 76.2MB in the beginning and 74.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.61ms. Allocated memory is still 104.9MB. Free memory was 74.1MB in the beginning and 72.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 612.67ms. Allocated memory is still 104.9MB. Free memory was 72.7MB in the beginning and 56.3MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 336.84ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 55.6MB in the beginning and 109.7MB in the end (delta: -54.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.87ms. Allocated memory is still 140.5MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: 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 3 procedures, 45 locations, 2 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: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 03:19:38,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/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_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V --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 0fdb430a563564dba34d4fe6c6ffeed490245913891172fda591ae44bb309801 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:19:41,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:19:41,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:19:41,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:19:41,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:19:41,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:19:41,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:19:41,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:19:41,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:19:41,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:19:41,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:19:41,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:19:41,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:19:41,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:19:41,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:19:41,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:19:41,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:19:41,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:19:41,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:19:41,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:19:41,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:19:41,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:19:41,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:19:41,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:19:41,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:19:41,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:19:41,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:19:41,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:19:41,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:19:41,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:19:41,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:19:41,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:19:41,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:19:41,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:19:41,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:19:41,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:19:41,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:19:41,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:19:41,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:19:41,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:19:41,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:19:41,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 03:19:41,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:19:41,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:19:41,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:19:41,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:19:41,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:19:41,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:19:41,826 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:19:41,827 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:19:41,827 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:19:41,827 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:19:41,829 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:19:41,829 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:19:41,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:19:41,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:19:41,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:19:41,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:19:41,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:19:41,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:19:41,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:19:41,833 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:19:41,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:19:41,834 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:19:41,834 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:19:41,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:19:41,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:19:41,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:19:41,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:19:41,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:19:41,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:19:41,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:19:41,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:19:41,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:19:41,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:19:41,839 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:19:41,839 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:19:41,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:19:41,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:19:41,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:19:41,840 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_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdb430a563564dba34d4fe6c6ffeed490245913891172fda591ae44bb309801 [2021-11-23 03:19:42,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:19:42,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:19:42,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:19:42,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:19:42,251 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:19:42,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c [2021-11-23 03:19:42,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/data/a5079d7c1/141b4c1e09f64e4e87b98139c852aed5/FLAGc16d88432 [2021-11-23 03:19:42,897 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:19:42,897 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c [2021-11-23 03:19:42,907 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/data/a5079d7c1/141b4c1e09f64e4e87b98139c852aed5/FLAGc16d88432 [2021-11-23 03:19:43,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/data/a5079d7c1/141b4c1e09f64e4e87b98139c852aed5 [2021-11-23 03:19:43,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:19:43,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:19:43,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:19:43,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:19:43,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:19:43,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d14a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43, skipping insertion in model container [2021-11-23 03:19:43,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:19:43,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:19:43,514 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c[1997,2010] [2021-11-23 03:19:43,519 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c[2366,2379] [2021-11-23 03:19:43,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:19:43,578 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:19:43,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c[1997,2010] [2021-11-23 03:19:43,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/sv-benchmarks/c/combinations/square_2+soft_float_2a.c.cil.c[2366,2379] [2021-11-23 03:19:43,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:19:43,640 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:19:43,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43 WrapperNode [2021-11-23 03:19:43,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:19:43,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:19:43,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:19:43,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:19:43,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,695 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-11-23 03:19:43,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:19:43,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:19:43,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:19:43,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:19:43,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:19:43,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:19:43,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:19:43,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:19:43,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (1/1) ... [2021-11-23 03:19:43,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:19:43,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:19:43,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:19:43,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:19:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:19:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:19:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-23 03:19:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-23 03:19:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:19:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:19:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:19:43,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:19:43,945 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:19:43,947 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:19:46,467 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:19:46,476 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:19:46,477 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:19:46,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:46 BoogieIcfgContainer [2021-11-23 03:19:46,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:19:46,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:19:46,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:19:46,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:19:46,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:19:43" (1/3) ... [2021-11-23 03:19:46,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc83647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:19:46, skipping insertion in model container [2021-11-23 03:19:46,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:19:43" (2/3) ... [2021-11-23 03:19:46,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc83647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:19:46, skipping insertion in model container [2021-11-23 03:19:46,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:46" (3/3) ... [2021-11-23 03:19:46,489 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_2a.c.cil.c [2021-11-23 03:19:46,496 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:19:46,496 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:19:46,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:19:46,580 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 [2021-11-23 03:19:46,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:19:46,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:19:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:19:46,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:19:46,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:19:46,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:19:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:19:46,614 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-23 03:19:46,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:19:46,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806265361] [2021-11-23 03:19:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:19:46,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:19:46,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:19:46,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:19:46,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:19:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:19:47,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 03:19:47,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:19:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:47,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:19:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:19:47,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:19:47,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806265361] [2021-11-23 03:19:47,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806265361] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:19:47,347 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:19:47,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:19:47,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811788152] [2021-11-23 03:19:47,350 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:19:47,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:19:47,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:19:47,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:19:47,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:19:47,393 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-23 03:19:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:19:47,429 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2021-11-23 03:19:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:19:47,431 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-23 03:19:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:19:47,440 INFO L225 Difference]: With dead ends: 117 [2021-11-23 03:19:47,441 INFO L226 Difference]: Without dead ends: 52 [2021-11-23 03:19:47,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:19:47,449 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:19:47,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:19:47,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-23 03:19:47,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-23 03:19:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:19:47,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-11-23 03:19:47,516 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2021-11-23 03:19:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:19:47,517 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-11-23 03:19:47,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-23 03:19:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-11-23 03:19:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:19:47,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:19:47,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:19:47,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:19:47,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:19:47,732 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:19:47,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:19:47,734 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-23 03:19:47,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:19:47,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977641008] [2021-11-23 03:19:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:19:47,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:19:47,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:19:47,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:19:47,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:20:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:20:59,732 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:22:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:22:34,196 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 03:22:34,197 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:22:34,199 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 03:22:34,201 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 03:22:34,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:22:34,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:22:34,406 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 03:22:34,410 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:22:34,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:22:34 BoogieIcfgContainer [2021-11-23 03:22:34,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:22:34,439 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:22:34,439 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:22:34,439 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:22:34,440 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:19:46" (3/4) ... [2021-11-23 03:22:34,442 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 03:22:34,498 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:22:34,498 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:22:34,500 INFO L158 Benchmark]: Toolchain (without parser) took 171241.74ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.6MB in the beginning and 40.0MB in the end (delta: -9.4MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2021-11-23 03:22:34,500 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.5MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:22:34,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.90ms. Allocated memory is still 54.5MB. Free memory was 30.4MB in the beginning and 29.4MB in the end (delta: 999.7kB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-11-23 03:22:34,502 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.63ms. Allocated memory is still 54.5MB. Free memory was 29.4MB in the beginning and 27.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:22:34,507 INFO L158 Benchmark]: Boogie Preprocessor took 60.86ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 27.5MB in the beginning and 49.7MB in the end (delta: -22.3MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2021-11-23 03:22:34,508 INFO L158 Benchmark]: RCFGBuilder took 2721.48ms. Allocated memory is still 67.1MB. Free memory was 49.5MB in the beginning and 36.0MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 03:22:34,509 INFO L158 Benchmark]: TraceAbstraction took 167956.56ms. Allocated memory is still 67.1MB. Free memory was 35.5MB in the beginning and 41.9MB in the end (delta: -6.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:22:34,509 INFO L158 Benchmark]: Witness Printer took 60.04ms. Allocated memory is still 67.1MB. Free memory was 41.9MB in the beginning and 40.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:22:34,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.5MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.90ms. Allocated memory is still 54.5MB. Free memory was 30.4MB in the beginning and 29.4MB in the end (delta: 999.7kB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.63ms. Allocated memory is still 54.5MB. Free memory was 29.4MB in the beginning and 27.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.86ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 27.5MB in the beginning and 49.7MB in the end (delta: -22.3MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2721.48ms. Allocated memory is still 67.1MB. Free memory was 49.5MB in the beginning and 36.0MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 167956.56ms. Allocated memory is still 67.1MB. Free memory was 35.5MB in the beginning and 41.9MB in the end (delta: -6.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 60.04ms. Allocated memory is still 67.1MB. Free memory was 41.9MB in the beginning and 40.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] [L48] reach_error() VAL [IN=0.9999999403953552, result=1.3984375, x=0.9999999403953552] - UnprovableResult [Line: 60]: 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 3 procedures, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 167.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 82 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 72.5s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 03:22:34,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db117354-4889-49b8-8269-93e03129d5a4/bin/utaipan-EQgc7hIp5V/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE