./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_3a.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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/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 6d3233ccb864b75538f8fed6a586b5cbac020cb4ad9bbb5d5357658307afa1e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:37:12,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:37:12,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:37:12,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:37:12,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:37:12,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:37:12,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:37:12,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:37:12,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:37:12,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:37:12,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:37:12,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:37:12,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:37:12,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:37:12,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:37:12,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:37:12,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:37:12,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:37:12,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:37:12,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:37:12,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:37:12,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:37:12,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:37:12,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:37:12,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:37:12,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:37:12,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:37:12,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:37:12,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:37:12,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:37:12,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:37:12,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:37:12,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:37:12,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:37:12,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:37:12,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:37:12,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:37:12,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:37:12,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:37:12,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:37:12,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:37:12,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:37:12,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:37:12,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:37:12,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:37:12,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:37:12,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:37:12,811 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:37:12,812 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:37:12,812 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:37:12,812 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:37:12,813 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:37:12,814 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:37:12,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:37:12,815 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:37:12,815 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:37:12,815 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:37:12,816 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:37:12,816 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:37:12,816 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:37:12,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:37:12,818 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:37:12,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:37:12,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:37:12,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:37:12,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:37:12,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:37:12,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:37:12,822 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:37:12,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:37:12,823 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:37:12,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:37:12,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:37:12,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:37:12,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:37:12,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:37:12,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:37:12,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:37:12,826 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:37:12,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:37:12,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:37:12,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:37:12,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:37:12,828 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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d3233ccb864b75538f8fed6a586b5cbac020cb4ad9bbb5d5357658307afa1e5 [2021-11-23 03:37:13,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:37:13,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:37:13,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:37:13,197 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:37:13,198 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:37:13,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c [2021-11-23 03:37:13,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/data/9fa1876e6/afd59f49295f4add8f34b456ed267096/FLAGe73447c9a [2021-11-23 03:37:13,904 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:37:13,905 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c [2021-11-23 03:37:13,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/data/9fa1876e6/afd59f49295f4add8f34b456ed267096/FLAGe73447c9a [2021-11-23 03:37:14,255 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/data/9fa1876e6/afd59f49295f4add8f34b456ed267096 [2021-11-23 03:37:14,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:37:14,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:37:14,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:37:14,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:37:14,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:37:14,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acda2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14, skipping insertion in model container [2021-11-23 03:37:14,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:37:14,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:37:14,575 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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[1997,2010] [2021-11-23 03:37:14,582 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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[2366,2379] [2021-11-23 03:37:14,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:37:14,641 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:37:14,661 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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[1997,2010] [2021-11-23 03:37:14,663 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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[2366,2379] [2021-11-23 03:37:14,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:37:14,719 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:37:14,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14 WrapperNode [2021-11-23 03:37:14,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:37:14,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:37:14,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:37:14,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:37:14,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,797 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2021-11-23 03:37:14,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:37:14,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:37:14,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:37:14,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:37:14,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:37:14,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:37:14,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:37:14,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:37:14,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (1/1) ... [2021-11-23 03:37:14,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:37:14,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:37:14,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:37:14,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:37:14,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:37:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-23 03:37:14,951 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-23 03:37:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:37:14,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:37:14,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:37:14,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:37:14,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:37:15,045 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:37:15,047 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:37:15,494 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:37:15,567 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:37:15,567 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:37:15,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:15 BoogieIcfgContainer [2021-11-23 03:37:15,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:37:15,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:37:15,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:37:15,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:37:15,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:37:14" (1/3) ... [2021-11-23 03:37:15,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fc280f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:37:15, skipping insertion in model container [2021-11-23 03:37:15,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:14" (2/3) ... [2021-11-23 03:37:15,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fc280f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:37:15, skipping insertion in model container [2021-11-23 03:37:15,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:15" (3/3) ... [2021-11-23 03:37:15,584 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_3a.c.cil.c [2021-11-23 03:37:15,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:37:15,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:37:15,658 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:37:15,673 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 03:37:15,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:37:15,706 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 03:37:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 03:37:15,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:15,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 03:37:15,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:15,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash 7112936, now seen corresponding path program 1 times [2021-11-23 03:37:15,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:15,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23440045] [2021-11-23 03:37:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:15,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:37:15,844 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:37:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:37:15,898 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:37:15,900 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:37:15,903 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 03:37:15,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 03:37:15,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:37:15,914 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 03:37:15,917 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:37:15,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:37:15 BoogieIcfgContainer [2021-11-23 03:37:15,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:37:15,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:37:15,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:37:15,955 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:37:15,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:15" (3/4) ... [2021-11-23 03:37:15,959 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 03:37:15,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:37:15,962 INFO L158 Benchmark]: Toolchain (without parser) took 1696.01ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 82.1MB in the beginning and 84.5MB in the end (delta: -2.4MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2021-11-23 03:37:15,962 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 113.2MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:37:15,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.09ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 81.7MB in the beginning and 118.1MB in the end (delta: -36.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:37:15,965 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.13ms. Allocated memory is still 146.8MB. Free memory was 118.1MB in the beginning and 115.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:37:15,973 INFO L158 Benchmark]: Boogie Preprocessor took 50.81ms. Allocated memory is still 146.8MB. Free memory was 115.9MB in the beginning and 114.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:37:15,975 INFO L158 Benchmark]: RCFGBuilder took 721.88ms. Allocated memory is still 146.8MB. Free memory was 114.4MB in the beginning and 98.2MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 03:37:15,976 INFO L158 Benchmark]: TraceAbstraction took 374.81ms. Allocated memory is still 146.8MB. Free memory was 97.7MB in the beginning and 85.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 03:37:15,977 INFO L158 Benchmark]: Witness Printer took 5.38ms. Allocated memory is still 146.8MB. Free memory is still 84.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:37:15,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 113.2MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 451.09ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 81.7MB in the beginning and 118.1MB in the end (delta: -36.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.13ms. Allocated memory is still 146.8MB. Free memory was 118.1MB in the beginning and 115.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.81ms. Allocated memory is still 146.8MB. Free memory was 115.9MB in the beginning and 114.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 721.88ms. Allocated memory is still 146.8MB. Free memory was 114.4MB in the beginning and 98.2MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 374.81ms. Allocated memory is still 146.8MB. Free memory was 97.7MB in the beginning and 85.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.38ms. Allocated memory is still 146.8MB. Free memory is still 84.5MB. 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: [L320] COND TRUE __VERIFIER_nondet_int() [L321] 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 < 1.399f) 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: 0.3s, 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=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 03:37:16,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/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 6d3233ccb864b75538f8fed6a586b5cbac020cb4ad9bbb5d5357658307afa1e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:37:18,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:37:18,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:37:18,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:37:18,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:37:18,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:37:18,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:37:18,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:37:18,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:37:18,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:37:18,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:37:18,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:37:18,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:37:18,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:37:18,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:37:18,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:37:18,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:37:18,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:37:18,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:37:18,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:37:18,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:37:18,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:37:18,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:37:18,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:37:18,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:37:18,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:37:18,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:37:18,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:37:18,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:37:18,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:37:18,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:37:18,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:37:18,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:37:18,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:37:18,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:37:18,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:37:18,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:37:18,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:37:18,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:37:18,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:37:18,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:37:18,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 03:37:18,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:37:18,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:37:18,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:37:18,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:37:18,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:37:18,945 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:37:18,946 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:37:18,946 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:37:18,946 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:37:18,947 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:37:18,948 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:37:18,948 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:37:18,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:37:18,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:37:18,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:37:18,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:37:18,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:37:18,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:37:18,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:37:18,952 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:37:18,952 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:37:18,953 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:37:18,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:37:18,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:37:18,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:37:18,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:37:18,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:37:18,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:37:18,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:37:18,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:37:18,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:37:18,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:37:18,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:37:18,956 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:37:18,957 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:37:18,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:37:18,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:37:18,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:37:18,958 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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d3233ccb864b75538f8fed6a586b5cbac020cb4ad9bbb5d5357658307afa1e5 [2021-11-23 03:37:19,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:37:19,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:37:19,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:37:19,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:37:19,473 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:37:19,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c [2021-11-23 03:37:19,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/data/bcb4540d9/24ae99db153d4e669c8acec931b3d4ca/FLAGbcb01e218 [2021-11-23 03:37:20,282 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:37:20,283 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c [2021-11-23 03:37:20,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/data/bcb4540d9/24ae99db153d4e669c8acec931b3d4ca/FLAGbcb01e218 [2021-11-23 03:37:20,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/data/bcb4540d9/24ae99db153d4e669c8acec931b3d4ca [2021-11-23 03:37:20,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:37:20,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:37:20,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:37:20,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:37:20,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:37:20,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:37:20" (1/1) ... [2021-11-23 03:37:20,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6afca1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:20, skipping insertion in model container [2021-11-23 03:37:20,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:37:20" (1/1) ... [2021-11-23 03:37:20,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:37:20,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:37:20,871 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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[1997,2010] [2021-11-23 03:37:20,878 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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[2366,2379] [2021-11-23 03:37:20,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:37:20,995 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:37:21,012 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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[1997,2010] [2021-11-23 03:37:21,014 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_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/sv-benchmarks/c/combinations/square_6+soft_float_3a.c.cil.c[2366,2379] [2021-11-23 03:37:21,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:37:21,085 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:37:21,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21 WrapperNode [2021-11-23 03:37:21,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:37:21,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:37:21,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:37:21,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:37:21,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (1/1) ... [2021-11-23 03:37:21,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (1/1) ... [2021-11-23 03:37:21,148 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-11-23 03:37:21,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:37:21,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:37:21,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:37:21,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:37:21,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (1/1) ... [2021-11-23 03:37:21,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (1/1) ... [2021-11-23 03:37:21,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (1/1) ... [2021-11-23 03:37:21,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (1/1) ... [2021-11-23 03:37:21,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (1/1) ... [2021-11-23 03:37:21,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (1/1) ... [2021-11-23 03:37:21,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (1/1) ... [2021-11-23 03:37:21,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:37:21,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:37:21,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:37:21,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:37:21,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (1/1) ... [2021-11-23 03:37:21,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:37:21,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:37:21,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:37:21,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:37:21,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:37:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:37:21,294 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-23 03:37:21,294 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-23 03:37:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:37:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:37:21,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:37:21,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:37:21,423 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:37:21,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:37:23,965 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:37:23,974 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:37:23,975 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:37:23,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:23 BoogieIcfgContainer [2021-11-23 03:37:23,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:37:23,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:37:23,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:37:23,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:37:23,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:37:20" (1/3) ... [2021-11-23 03:37:23,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619dd281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:37:23, skipping insertion in model container [2021-11-23 03:37:23,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:37:21" (2/3) ... [2021-11-23 03:37:23,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619dd281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:37:23, skipping insertion in model container [2021-11-23 03:37:23,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:23" (3/3) ... [2021-11-23 03:37:23,987 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_3a.c.cil.c [2021-11-23 03:37:23,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:37:23,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:37:24,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:37:24,057 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 03:37:24,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:37:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 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 03:37:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:37:24,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:24,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:24,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:24,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-23 03:37:24,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:24,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337869043] [2021-11-23 03:37:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:24,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:24,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:24,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:24,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:37:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:24,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 03:37:24,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:24,758 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 03:37:24,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:37:24,812 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 03:37:24,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:37:24,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337869043] [2021-11-23 03:37:24,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337869043] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:24,814 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:24,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:37:24,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730301243] [2021-11-23 03:37:24,818 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:24,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:37:24,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:37:24,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:37:24,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:37:24,872 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 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 03:37:24,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:24,919 INFO L93 Difference]: Finished difference Result 115 states and 173 transitions. [2021-11-23 03:37:24,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:37:24,921 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 03:37:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:24,934 INFO L225 Difference]: With dead ends: 115 [2021-11-23 03:37:24,934 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 03:37:24,945 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 03:37:24,952 INFO L933 BasicCegarLoop]: 81 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, 81 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 03:37:24,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:37:24,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 03:37:24,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-23 03:37:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 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 03:37:25,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2021-11-23 03:37:25,004 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 7 [2021-11-23 03:37:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:25,005 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2021-11-23 03:37:25,006 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 03:37:25,006 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2021-11-23 03:37:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:37:25,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:25,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:37:25,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:25,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:37:25,222 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:25,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-23 03:37:25,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:37:25,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162922201] [2021-11-23 03:37:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:25,225 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:37:25,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:37:25,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:37:25,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f55d8c6-3f5d-4b6a-b3a6-f4c027beaecc/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:49:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:49:09,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:49:09,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:49:23,894 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-23 03:50:14,023 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from false [2021-11-23 03:50:16,068 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1399.0 1000.0)))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from true [2021-11-23 03:50:16,069 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 03:50:16,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:50:26,716 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1399.0 1000.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-11-23 03:50:28,780 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1399.0 1000.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-11-23 03:50:43,501 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1399.0 1000.0))) (fp.geq .cse0 (_ +zero 8 24))))) is different from false [2021-11-23 03:50:45,568 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 1399.0 1000.0))) (fp.geq .cse0 (_ +zero 8 24))))) is different from true [2021-11-23 03:51:29,815 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1399.0 1000.0)))))))) is different from false [2021-11-23 03:51:31,884 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.geq .cse1 (_ +zero 8 24)) (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1399.0 1000.0)))))))) is different from true