./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF --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 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:34:49,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:34:49,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:34:49,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:34:49,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:34:49,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:34:49,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:34:49,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:34:49,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:34:49,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:34:49,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:34:49,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:34:49,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:34:49,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:34:49,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:34:49,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:34:49,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:34:49,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:34:49,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:34:49,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:34:49,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:34:49,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:34:49,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:34:49,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:34:49,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:34:49,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:34:49,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:34:49,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:34:49,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:34:49,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:34:49,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:34:49,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:34:49,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:34:49,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:34:49,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:34:49,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:34:49,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:34:49,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:34:49,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:34:49,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:34:49,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:34:49,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:34:49,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:34:49,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:34:49,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:34:49,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:34:49,827 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:34:49,828 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:34:49,828 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:34:49,829 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:34:49,834 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:34:49,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:34:49,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:34:49,835 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:34:49,835 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:34:49,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:34:49,836 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:34:49,836 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:34:49,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:34:49,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:34:49,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:34:49,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:34:49,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:34:49,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:34:49,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:34:49,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:34:49,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:34:49,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:34:49,840 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:34:49,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:34:49,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:34:49,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:34:49,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:34:49,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:34:49,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:34:49,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:34:49,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:34:49,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:34:49,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:34:49,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:34:49,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:34:49,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:34:49,843 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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 [2021-11-13 02:34:50,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:34:50,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:34:50,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:34:50,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:34:50,236 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:34:50,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2021-11-13 02:34:50,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/data/b67521066/de7282b4bd934f9699586881ec54b0c6/FLAG389707278 [2021-11-13 02:34:50,987 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:34:50,988 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2021-11-13 02:34:50,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/data/b67521066/de7282b4bd934f9699586881ec54b0c6/FLAG389707278 [2021-11-13 02:34:51,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/data/b67521066/de7282b4bd934f9699586881ec54b0c6 [2021-11-13 02:34:51,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:34:51,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:34:51,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:34:51,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:34:51,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:34:51,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a3d884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51, skipping insertion in model container [2021-11-13 02:34:51,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:34:51,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:34:51,673 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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2021-11-13 02:34:51,679 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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2021-11-13 02:34:51,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:34:51,745 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:34:51,764 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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2021-11-13 02:34:51,766 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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2021-11-13 02:34:51,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:34:51,841 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:34:51,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51 WrapperNode [2021-11-13 02:34:51,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:34:51,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:34:51,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:34:51,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:34:51,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:34:51,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:34:51,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:34:51,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:34:51,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:51,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:34:51,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:34:51,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:34:51,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:34:52,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (1/1) ... [2021-11-13 02:34:52,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:34:52,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:34:52,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:34:52,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:34:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:34:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-13 02:34:52,115 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-13 02:34:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:34:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:34:52,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:34:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 02:34:52,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 02:34:52,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:34:52,849 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 02:34:52,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:34:52 BoogieIcfgContainer [2021-11-13 02:34:52,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:34:52,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:34:52,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:34:52,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:34:52,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:34:51" (1/3) ... [2021-11-13 02:34:52,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344378d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:34:52, skipping insertion in model container [2021-11-13 02:34:52,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:51" (2/3) ... [2021-11-13 02:34:52,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344378d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:34:52, skipping insertion in model container [2021-11-13 02:34:52,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:34:52" (3/3) ... [2021-11-13 02:34:52,865 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-3a.c.cil.c [2021-11-13 02:34:52,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:34:52,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 02:34:52,939 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:34:52,947 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 [2021-11-13 02:34:52,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 02:34:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 43 states have internal predecessors, (60), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-13 02:34:52,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-13 02:34:52,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:34:52,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-13 02:34:52,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:34:52,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:34:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash 9697065, now seen corresponding path program 1 times [2021-11-13 02:34:52,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:34:52,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115982484] [2021-11-13 02:34:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:34:53,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:34:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:34:53,143 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:34:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:34:53,189 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 02:34:53,221 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:34:53,223 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-13 02:34:53,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-13 02:34:53,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:34:53,232 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-13 02:34:53,236 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:34:53,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:34:53 BoogieIcfgContainer [2021-11-13 02:34:53,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:34:53,263 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:34:53,263 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:34:53,264 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:34:53,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:34:52" (3/4) ... [2021-11-13 02:34:53,268 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 02:34:53,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:34:53,270 INFO L158 Benchmark]: Toolchain (without parser) took 1956.58ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 64.6MB in the beginning and 106.0MB in the end (delta: -41.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:34:53,271 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 104.9MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:34:53,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.31ms. Allocated memory is still 104.9MB. Free memory was 64.4MB in the beginning and 75.2MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 02:34:53,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.36ms. Allocated memory is still 104.9MB. Free memory was 75.2MB in the beginning and 73.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:34:53,274 INFO L158 Benchmark]: Boogie Preprocessor took 61.38ms. Allocated memory is still 104.9MB. Free memory was 72.7MB in the beginning and 71.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:34:53,275 INFO L158 Benchmark]: RCFGBuilder took 854.14ms. Allocated memory is still 104.9MB. Free memory was 71.4MB in the beginning and 49.2MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-13 02:34:53,276 INFO L158 Benchmark]: TraceAbstraction took 406.63ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 48.8MB in the beginning and 106.2MB in the end (delta: -57.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:34:53,277 INFO L158 Benchmark]: Witness Printer took 6.03ms. Allocated memory is still 132.1MB. Free memory was 106.2MB in the beginning and 106.0MB in the end (delta: 150.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:34:53,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 104.9MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 520.31ms. Allocated memory is still 104.9MB. Free memory was 64.4MB in the beginning and 75.2MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.36ms. Allocated memory is still 104.9MB. Free memory was 75.2MB in the beginning and 73.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.38ms. Allocated memory is still 104.9MB. Free memory was 72.7MB in the beginning and 71.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 854.14ms. Allocated memory is still 104.9MB. Free memory was 71.4MB in the beginning and 49.2MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 406.63ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 48.8MB in the beginning and 106.2MB in the end (delta: -57.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.03ms. Allocated memory is still 132.1MB. Free memory was 106.2MB in the beginning and 106.0MB in the end (delta: 150.0kB). 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: [L402] COND TRUE __VERIFIER_nondet_int() [L403] 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 < 1.3985f) 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, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=53occurred 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, 0.1s 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 [2021-11-13 02:34:53,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF --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 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:34:56,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:34:56,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:34:56,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:34:56,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:34:56,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:34:56,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:34:56,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:34:56,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:34:56,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:34:56,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:34:56,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:34:56,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:34:56,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:34:56,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:34:56,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:34:56,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:34:56,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:34:56,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:34:56,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:34:56,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:34:56,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:34:56,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:34:56,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:34:56,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:34:56,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:34:56,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:34:56,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:34:56,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:34:56,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:34:56,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:34:56,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:34:56,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:34:56,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:34:56,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:34:56,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:34:56,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:34:56,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:34:56,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:34:56,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:34:56,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:34:56,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:34:56,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:34:56,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:34:56,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:34:56,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:34:56,384 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:34:56,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:34:56,385 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:34:56,385 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:34:56,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:34:56,386 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:34:56,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:34:56,388 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:34:56,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:34:56,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:34:56,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:34:56,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:34:56,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:34:56,391 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:34:56,391 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:34:56,391 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:34:56,392 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:34:56,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:34:56,393 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:34:56,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:34:56,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:34:56,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:34:56,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:34:56,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:34:56,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:34:56,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:34:56,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:34:56,396 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:34:56,397 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:34:56,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:34:56,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:34:56,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:34:56,398 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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 [2021-11-13 02:34:56,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:34:56,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:34:56,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:34:56,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:34:56,930 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:34:56,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2021-11-13 02:34:57,027 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/data/98cd68665/5758a630cb734da19afc72730929ba59/FLAG7c2a945eb [2021-11-13 02:34:57,650 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:34:57,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2021-11-13 02:34:57,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/data/98cd68665/5758a630cb734da19afc72730929ba59/FLAG7c2a945eb [2021-11-13 02:34:57,964 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/data/98cd68665/5758a630cb734da19afc72730929ba59 [2021-11-13 02:34:57,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:34:57,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:34:57,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:34:57,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:34:57,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:34:57,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:34:57" (1/1) ... [2021-11-13 02:34:57,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754695a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:57, skipping insertion in model container [2021-11-13 02:34:57,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:34:57" (1/1) ... [2021-11-13 02:34:58,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:34:58,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:34:58,256 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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2021-11-13 02:34:58,262 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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2021-11-13 02:34:58,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:34:58,387 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:34:58,407 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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2021-11-13 02:34:58,409 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_1d3e0375-8e1b-496f-b26a-3c4989e5296d/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2021-11-13 02:34:58,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:34:58,497 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:34:58,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58 WrapperNode [2021-11-13 02:34:58,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:34:58,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:34:58,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:34:58,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:34:58,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (1/1) ... [2021-11-13 02:34:58,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (1/1) ... [2021-11-13 02:34:58,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:34:58,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:34:58,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:34:58,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:34:58,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (1/1) ... [2021-11-13 02:34:58,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (1/1) ... [2021-11-13 02:34:58,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (1/1) ... [2021-11-13 02:34:58,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (1/1) ... [2021-11-13 02:34:58,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (1/1) ... [2021-11-13 02:34:58,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (1/1) ... [2021-11-13 02:34:58,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (1/1) ... [2021-11-13 02:34:58,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:34:58,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:34:58,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:34:58,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:34:58,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (1/1) ... [2021-11-13 02:34:58,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:34:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:34:58,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:34:58,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:34:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:34:58,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:34:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-13 02:34:58,771 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-13 02:34:58,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:34:58,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:34:58,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 02:34:58,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 02:35:01,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:35:01,667 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 02:35:01,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:35:01 BoogieIcfgContainer [2021-11-13 02:35:01,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:35:01,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:35:01,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:35:01,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:35:01,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:34:57" (1/3) ... [2021-11-13 02:35:01,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a1e121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:35:01, skipping insertion in model container [2021-11-13 02:35:01,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:34:58" (2/3) ... [2021-11-13 02:35:01,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a1e121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:35:01, skipping insertion in model container [2021-11-13 02:35:01,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:35:01" (3/3) ... [2021-11-13 02:35:01,680 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-3a.c.cil.c [2021-11-13 02:35:01,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:35:01,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 02:35:01,754 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:35:01,763 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 [2021-11-13 02:35:01,764 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 02:35:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-13 02:35:01,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 02:35:01,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:01,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:01,797 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:01,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:01,804 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-13 02:35:01,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:01,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369419505] [2021-11-13 02:35:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:01,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:01,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:01,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:01,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:35:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:02,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 02:35:02,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:35:02,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:02,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:35:02,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:35:02,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369419505] [2021-11-13 02:35:02,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369419505] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:02,794 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:02,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:35:02,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299332016] [2021-11-13 02:35:02,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:02,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:35:02,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:35:02,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:35:02,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:35:02,843 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2021-11-13 02:35:02,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:02,886 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-11-13 02:35:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:35:02,889 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 [2021-11-13 02:35:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:02,901 INFO L225 Difference]: With dead ends: 157 [2021-11-13 02:35:02,901 INFO L226 Difference]: Without dead ends: 74 [2021-11-13 02:35:02,907 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 [2021-11-13 02:35:02,913 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:02,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 2.52ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:35:02,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-13 02:35:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-13 02:35:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:35:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-11-13 02:35:02,987 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-11-13 02:35:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:02,988 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-11-13 02:35:02,988 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) [2021-11-13 02:35:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-11-13 02:35:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 02:35:02,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:02,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:03,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:03,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:35:03,206 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:03,208 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-13 02:35:03,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:35:03,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653749153] [2021-11-13 02:35:03,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:03,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:35:03,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:35:03,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:35:03,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3e0375-8e1b-496f-b26a-3c4989e5296d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process