./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:05:15,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:05:15,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:05:16,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:05:16,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:05:16,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:05:16,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:05:16,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:05:16,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:05:16,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:05:16,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:05:16,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:05:16,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:05:16,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:05:16,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:05:16,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:05:16,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:05:16,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:05:16,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:05:16,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:05:16,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:05:16,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:05:16,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:05:16,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:05:16,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:05:16,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:05:16,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:05:16,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:05:16,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:05:16,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:05:16,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:05:16,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:05:16,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:05:16,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:05:16,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:05:16,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:05:16,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:05:16,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:05:16,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:05:16,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:05:16,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:05:16,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:05:16,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:05:16,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:05:16,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:05:16,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:05:16,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:05:16,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:05:16,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:05:16,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:05:16,183 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:05:16,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:05:16,185 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:05:16,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:05:16,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:05:16,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:05:16,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:05:16,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:05:16,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:05:16,186 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:05:16,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:05:16,187 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:05:16,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:05:16,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:05:16,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:05:16,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:05:16,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:05:16,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:05:16,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:05:16,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:05:16,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:05:16,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:05:16,191 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:05:16,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:05:16,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:05:16,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:05:16,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 [2021-11-20 06:05:16,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:05:16,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:05:16,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:05:16,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:05:16,660 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:05:16,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2021-11-20 06:05:16,736 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/data/c42f8bf75/21b0bcd231924820a62efb5b1c8789a1/FLAGc58cc06f3 [2021-11-20 06:05:17,407 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:05:17,408 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2021-11-20 06:05:17,417 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/data/c42f8bf75/21b0bcd231924820a62efb5b1c8789a1/FLAGc58cc06f3 [2021-11-20 06:05:17,709 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/data/c42f8bf75/21b0bcd231924820a62efb5b1c8789a1 [2021-11-20 06:05:17,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:05:17,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:05:17,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:05:17,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:05:17,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:05:17,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:17" (1/1) ... [2021-11-20 06:05:17,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c9e6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:17, skipping insertion in model container [2021-11-20 06:05:17,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:17" (1/1) ... [2021-11-20 06:05:17,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:05:17,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:05:18,062 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_d6e98285-ebea-4008-96a4-93f0125877c8/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2021-11-20 06:05:18,070 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_d6e98285-ebea-4008-96a4-93f0125877c8/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2021-11-20 06:05:18,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:18,182 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:05:18,211 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_d6e98285-ebea-4008-96a4-93f0125877c8/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2021-11-20 06:05:18,216 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_d6e98285-ebea-4008-96a4-93f0125877c8/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2021-11-20 06:05:18,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:18,283 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:05:18,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18 WrapperNode [2021-11-20 06:05:18,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:05:18,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:05:18,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:05:18,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:05:18,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (1/1) ... [2021-11-20 06:05:18,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (1/1) ... [2021-11-20 06:05:18,357 INFO L137 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2021-11-20 06:05:18,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:05:18,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:05:18,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:05:18,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:05:18,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (1/1) ... [2021-11-20 06:05:18,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (1/1) ... [2021-11-20 06:05:18,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (1/1) ... [2021-11-20 06:05:18,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (1/1) ... [2021-11-20 06:05:18,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (1/1) ... [2021-11-20 06:05:18,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (1/1) ... [2021-11-20 06:05:18,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (1/1) ... [2021-11-20 06:05:18,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:05:18,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:05:18,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:05:18,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:05:18,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (1/1) ... [2021-11-20 06:05:18,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:05:18,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:18,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:18,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:05:18,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:05:18,517 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-20 06:05:18,518 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-20 06:05:18,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:05:18,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:05:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:05:18,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:05:18,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:05:18,626 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:05:18,627 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:05:19,007 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:05:19,016 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:05:19,016 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:05:19,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:05:19 BoogieIcfgContainer [2021-11-20 06:05:19,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:05:19,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:05:19,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:05:19,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:05:19,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:05:17" (1/3) ... [2021-11-20 06:05:19,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cafea37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:05:19, skipping insertion in model container [2021-11-20 06:05:19,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:18" (2/3) ... [2021-11-20 06:05:19,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cafea37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:05:19, skipping insertion in model container [2021-11-20 06:05:19,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:05:19" (3/3) ... [2021-11-20 06:05:19,029 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-3a.c.cil.c [2021-11-20 06:05:19,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:05:19,035 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:05:19,088 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:05:19,095 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:05:19,095 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:05:19,115 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) [2021-11-20 06:05:19,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:05:19,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:19,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:19,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-20 06:05:19,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:19,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662396520] [2021-11-20 06:05:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:19,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:05:19,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:05:19,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662396520] [2021-11-20 06:05:19,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662396520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:19,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:05:19,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:05:19,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708321068] [2021-11-20 06:05:19,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:19,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:05:19,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:05:19,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:05:19,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:05:19,325 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) [2021-11-20 06:05:19,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:19,411 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-11-20 06:05:19,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:05:19,414 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 [2021-11-20 06:05:19,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:05:19,429 INFO L225 Difference]: With dead ends: 157 [2021-11-20 06:05:19,429 INFO L226 Difference]: Without dead ends: 74 [2021-11-20 06:05:19,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:05:19,442 INFO L933 BasicCegarLoop]: 117 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, 117 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 [2021-11-20 06:05:19,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:05:19,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-20 06:05:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-20 06:05:19,511 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) [2021-11-20 06:05:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-11-20 06:05:19,515 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-11-20 06:05:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:05:19,516 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-11-20 06:05:19,516 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) [2021-11-20 06:05:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-11-20 06:05:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:05:19,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:19,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:19,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:05:19,518 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-20 06:05:19,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:05:19,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001784505] [2021-11-20 06:05:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:19,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:05:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:19,537 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:05:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:05:19,568 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:05:19,569 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:05:19,571 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-20 06:05:19,573 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-20 06:05:19,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:05:19,578 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 06:05:19,581 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:05:19,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:05:19 BoogieIcfgContainer [2021-11-20 06:05:19,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:05:19,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:05:19,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:05:19,607 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:05:19,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:05:19" (3/4) ... [2021-11-20 06:05:19,611 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:05:19,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:05:19,612 INFO L158 Benchmark]: Toolchain (without parser) took 1898.41ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 54.1MB in the beginning and 90.1MB in the end (delta: -36.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:05:19,613 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 94.4MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:05:19,614 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.12ms. Allocated memory is still 94.4MB. Free memory was 53.9MB in the beginning and 65.9MB in the end (delta: -11.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 06:05:19,614 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.04ms. Allocated memory is still 94.4MB. Free memory was 65.9MB in the beginning and 63.5MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 06:05:19,615 INFO L158 Benchmark]: Boogie Preprocessor took 67.93ms. Allocated memory is still 94.4MB. Free memory was 63.5MB in the beginning and 62.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:05:19,616 INFO L158 Benchmark]: RCFGBuilder took 592.06ms. Allocated memory is still 94.4MB. Free memory was 61.9MB in the beginning and 46.7MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-20 06:05:19,616 INFO L158 Benchmark]: TraceAbstraction took 584.75ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 46.2MB in the beginning and 90.1MB in the end (delta: -43.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:05:19,617 INFO L158 Benchmark]: Witness Printer took 5.01ms. Allocated memory is still 123.7MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:05:19,620 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 94.4MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.12ms. Allocated memory is still 94.4MB. Free memory was 53.9MB in the beginning and 65.9MB in the end (delta: -11.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.04ms. Allocated memory is still 94.4MB. Free memory was 65.9MB in the beginning and 63.5MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.93ms. Allocated memory is still 94.4MB. Free memory was 63.5MB in the beginning and 62.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 592.06ms. Allocated memory is still 94.4MB. Free memory was 61.9MB in the beginning and 46.7MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 584.75ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 46.2MB in the beginning and 90.1MB in the end (delta: -43.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.01ms. Allocated memory is still 123.7MB. Free memory is still 90.1MB. 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) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=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, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 117 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 117 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2021-11-20 06:05:19,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/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_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:05:22,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:05:22,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:05:22,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:05:22,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:05:22,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:05:22,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:05:22,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:05:22,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:05:22,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:05:22,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:05:22,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:05:22,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:05:22,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:05:22,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:05:22,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:05:22,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:05:22,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:05:22,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:05:22,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:05:22,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:05:22,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:05:22,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:05:22,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:05:22,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:05:22,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:05:22,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:05:22,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:05:22,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:05:22,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:05:22,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:05:22,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:05:22,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:05:22,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:05:22,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:05:22,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:05:22,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:05:22,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:05:22,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:05:22,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:05:22,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:05:22,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 06:05:22,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:05:22,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:05:22,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:05:22,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:05:22,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:05:22,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:05:22,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:05:22,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:05:22,594 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:05:22,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:05:22,595 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:05:22,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:05:22,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:05:22,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:05:22,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:05:22,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:05:22,596 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:05:22,597 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:05:22,597 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:05:22,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:05:22,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:05:22,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:05:22,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:05:22,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:05:22,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:05:22,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:05:22,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:05:22,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:05:22,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:05:22,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:05:22,600 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:05:22,600 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:05:22,600 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:05:22,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:05:22,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:05:22,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:05:22,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:05:22,602 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_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8027421f69536d6ab05b283a89e3cb3b4d544d6c464b60eed1661be7de5f3901 [2021-11-20 06:05:23,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:05:23,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:05:23,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:05:23,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:05:23,109 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:05:23,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2021-11-20 06:05:23,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/data/996e31b1f/a5a33e7f0107479d9bf14ef36da1fdec/FLAGc94447202 [2021-11-20 06:05:23,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:05:23,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c [2021-11-20 06:05:23,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/data/996e31b1f/a5a33e7f0107479d9bf14ef36da1fdec/FLAGc94447202 [2021-11-20 06:05:24,168 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/data/996e31b1f/a5a33e7f0107479d9bf14ef36da1fdec [2021-11-20 06:05:24,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:05:24,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:05:24,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:05:24,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:05:24,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:05:24,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d2820b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24, skipping insertion in model container [2021-11-20 06:05:24,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:05:24,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:05:24,422 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_d6e98285-ebea-4008-96a4-93f0125877c8/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2021-11-20 06:05:24,426 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_d6e98285-ebea-4008-96a4-93f0125877c8/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2021-11-20 06:05:24,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:24,550 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:05:24,583 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_d6e98285-ebea-4008-96a4-93f0125877c8/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[1997,2010] [2021-11-20 06:05:24,586 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_d6e98285-ebea-4008-96a4-93f0125877c8/sv-benchmarks/c/combinations/square_6+soft_float_1-3a.c.cil.c[2366,2379] [2021-11-20 06:05:24,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:05:24,662 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:05:24,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24 WrapperNode [2021-11-20 06:05:24,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:05:24,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:05:24,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:05:24,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:05:24,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,711 INFO L137 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2021-11-20 06:05:24,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:05:24,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:05:24,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:05:24,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:05:24,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:05:24,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:05:24,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:05:24,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:05:24,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (1/1) ... [2021-11-20 06:05:24,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:05:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:05:24,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:05:24,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:05:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:05:24,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:05:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-20 06:05:24,868 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-20 06:05:24,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:05:24,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:05:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:05:24,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:05:25,013 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:05:25,016 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:05:27,721 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:05:27,733 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:05:27,733 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:05:27,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:05:27 BoogieIcfgContainer [2021-11-20 06:05:27,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:05:27,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:05:27,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:05:27,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:05:27,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:05:24" (1/3) ... [2021-11-20 06:05:27,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b11287c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:05:27, skipping insertion in model container [2021-11-20 06:05:27,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:05:24" (2/3) ... [2021-11-20 06:05:27,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b11287c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:05:27, skipping insertion in model container [2021-11-20 06:05:27,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:05:27" (3/3) ... [2021-11-20 06:05:27,746 INFO L111 eAbstractionObserver]: Analyzing ICFG square_6+soft_float_1-3a.c.cil.c [2021-11-20 06:05:27,753 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:05:27,753 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:05:27,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:05:27,824 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:05:27,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:05:27,852 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) [2021-11-20 06:05:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:05:27,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:27,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:27,859 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:27,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:27,866 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-20 06:05:27,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:05:27,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821464613] [2021-11-20 06:05:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:27,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:05:27,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:05:27,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:05:27,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:05:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:05:28,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 06:05:28,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:05:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:05:28,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:05:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:05:28,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:05:28,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821464613] [2021-11-20 06:05:28,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821464613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:05:28,875 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:05:28,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:05:28,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428485924] [2021-11-20 06:05:28,878 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:05:28,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:05:28,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:05:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:05:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:05:28,951 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) [2021-11-20 06:05:29,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:05:29,030 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-11-20 06:05:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:05:29,033 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 [2021-11-20 06:05:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:05:29,050 INFO L225 Difference]: With dead ends: 157 [2021-11-20 06:05:29,050 INFO L226 Difference]: Without dead ends: 74 [2021-11-20 06:05:29,064 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 [2021-11-20 06:05:29,073 INFO L933 BasicCegarLoop]: 117 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, 117 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 [2021-11-20 06:05:29,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:05:29,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-20 06:05:29,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-20 06:05:29,123 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) [2021-11-20 06:05:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-11-20 06:05:29,128 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-11-20 06:05:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:05:29,128 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-11-20 06:05:29,129 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) [2021-11-20 06:05:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-11-20 06:05:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:05:29,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:05:29,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:05:29,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 06:05:29,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:05:29,340 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:05:29,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:05:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-20 06:05:29,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:05:29,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312449540] [2021-11-20 06:05:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:05:29,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:05:29,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:05:29,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:05:29,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6e98285-ebea-4008-96a4-93f0125877c8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:18:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:13,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:18:13,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:18:28,402 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 [2021-11-20 06:19:18,930 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 [2021-11-20 06:19:20,981 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 [2021-11-20 06:19:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:19:20,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:19:31,728 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 [2021-11-20 06:19:33,809 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 [2021-11-20 06:19:48,782 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 [2021-11-20 06:19:50,863 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