./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.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_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/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_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/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_77386751-a3f0-4549-aa93-65556246a535/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 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:41:26,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:41:26,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:41:26,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:41:26,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:41:26,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:41:26,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:41:26,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:41:26,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:41:26,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:41:26,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:41:26,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:41:26,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:41:26,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:41:26,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:41:26,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:41:26,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:41:26,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:41:26,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:41:26,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:41:26,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:41:26,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:41:26,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:41:26,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:41:26,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:41:26,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:41:26,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:41:26,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:41:26,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:41:26,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:41:26,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:41:26,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:41:26,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:41:26,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:41:26,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:41:26,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:41:26,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:41:26,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:41:26,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:41:26,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:41:26,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:41:26,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:41:26,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:41:26,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:41:26,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:41:26,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:41:26,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:41:26,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:41:26,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:41:26,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:41:26,197 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:41:26,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:41:26,198 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:41:26,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:41:26,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:41:26,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:41:26,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:41:26,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:41:26,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:41:26,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:41:26,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:41:26,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:41:26,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:41:26,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:41:26,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:41:26,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:41:26,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:41:26,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:41:26,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:41:26,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:41:26,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:41:26,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:41:26,204 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:41:26,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:41:26,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:41:26,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:41:26,205 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_77386751-a3f0-4549-aa93-65556246a535/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 [2021-11-20 07:41:26,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:41:26,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:41:26,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:41:26,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:41:26,473 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:41:26,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-11-20 07:41:26,544 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/data/2757abc10/c19403f711df4cd6b158bbe7e24ed86f/FLAG10c7ac4b1 [2021-11-20 07:41:27,096 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:41:27,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-11-20 07:41:27,103 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/data/2757abc10/c19403f711df4cd6b158bbe7e24ed86f/FLAG10c7ac4b1 [2021-11-20 07:41:27,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/data/2757abc10/c19403f711df4cd6b158bbe7e24ed86f [2021-11-20 07:41:27,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:41:27,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:41:27,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:41:27,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:41:27,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:41:27,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392071f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27, skipping insertion in model container [2021-11-20 07:41:27,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:41:27,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:41:27,688 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_77386751-a3f0-4549-aa93-65556246a535/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-11-20 07:41:27,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:41:27,699 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:41:27,725 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_77386751-a3f0-4549-aa93-65556246a535/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-11-20 07:41:27,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:41:27,740 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:41:27,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27 WrapperNode [2021-11-20 07:41:27,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:41:27,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:41:27,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:41:27,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:41:27,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,782 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 116 [2021-11-20 07:41:27,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:41:27,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:41:27,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:41:27,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:41:27,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:41:27,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:41:27,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:41:27,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:41:27,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (1/1) ... [2021-11-20 07:41:27,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:41:27,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:41:27,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:41:27,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:41:27,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:41:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:41:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:41:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-20 07:41:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:41:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-20 07:41:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:41:27,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:41:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:41:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:41:27,963 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:41:27,965 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:41:28,209 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:41:28,229 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:41:28,230 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-20 07:41:28,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:41:28 BoogieIcfgContainer [2021-11-20 07:41:28,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:41:28,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:41:28,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:41:28,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:41:28,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:41:27" (1/3) ... [2021-11-20 07:41:28,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502fa997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:41:28, skipping insertion in model container [2021-11-20 07:41:28,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:27" (2/3) ... [2021-11-20 07:41:28,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502fa997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:41:28, skipping insertion in model container [2021-11-20 07:41:28,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:41:28" (3/3) ... [2021-11-20 07:41:28,263 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2021-11-20 07:41:28,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:41:28,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:41:28,317 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:41:28,325 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 07:41:28,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:41:28,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 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 07:41:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 07:41:28,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:28,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:41:28,365 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:41:28,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2021-11-20 07:41:28,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:41:28,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818958757] [2021-11-20 07:41:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:28,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:41:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:28,560 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 07:41:28,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:41:28,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818958757] [2021-11-20 07:41:28,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818958757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:41:28,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:41:28,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:41:28,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623103182] [2021-11-20 07:41:28,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:41:28,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:41:28,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:41:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:41:28,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:41:28,611 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:41:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:41:28,643 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2021-11-20 07:41:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:41:28,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 07:41:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:41:28,655 INFO L225 Difference]: With dead ends: 67 [2021-11-20 07:41:28,655 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 07:41:28,659 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 07:41:28,666 INFO L933 BasicCegarLoop]: 46 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, 46 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 07:41:28,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:41:28,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 07:41:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 07:41:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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 07:41:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-11-20 07:41:28,710 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-11-20 07:41:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:41:28,710 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-11-20 07:41:28,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:41:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-11-20 07:41:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:41:28,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:28,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:41:28,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:41:28,713 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:41:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:28,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2021-11-20 07:41:28,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:41:28,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128555002] [2021-11-20 07:41:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:28,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:41:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:41:28,801 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:41:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:41:28,887 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:41:28,888 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 07:41:28,890 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:41:28,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:41:28,908 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 07:41:28,911 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:41:28,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:41:28 BoogieIcfgContainer [2021-11-20 07:41:28,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:41:28,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:41:28,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:41:28,946 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:41:28,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:41:28" (3/4) ... [2021-11-20 07:41:28,950 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:41:28,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:41:28,952 INFO L158 Benchmark]: Toolchain (without parser) took 1502.79ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 74.1MB in the beginning and 75.2MB in the end (delta: -1.1MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2021-11-20 07:41:28,953 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory was 59.3MB in the beginning and 59.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:41:28,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.52ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 74.1MB in the beginning and 116.5MB in the end (delta: -42.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:41:28,957 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.08ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 114.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:41:28,959 INFO L158 Benchmark]: Boogie Preprocessor took 30.69ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 112.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:41:28,959 INFO L158 Benchmark]: RCFGBuilder took 417.46ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 100.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 07:41:28,960 INFO L158 Benchmark]: TraceAbstraction took 712.10ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 75.2MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-20 07:41:28,960 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 142.6MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:41:28,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory was 59.3MB in the beginning and 59.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.52ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 74.1MB in the beginning and 116.5MB in the end (delta: -42.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.08ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 114.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.69ms. Allocated memory is still 142.6MB. Free memory was 114.4MB in the beginning and 112.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.46ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 100.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 712.10ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 75.2MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 142.6MB. Free memory is still 75.2MB. 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: 100]: 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 15, overapproximation of bitwiseAnd at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 32. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L93] float x = __VERIFIER_nondet_float(); [L94] COND TRUE x < -0.0f [L96] CALL, EXPR __ieee754_sqrtf(x) [L20] float z; [L21] __uint32_t r, hx; [L22] __int32_t ix, s, q, m, t, i; VAL [\old(x)=4294967297, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967297] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L29] hx = ix & 0x7fffffff VAL [\old(x)=4294967297, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967297] [L31] COND TRUE !((hx) < 0x7f800000L) [L32] return x * x + x; VAL [\old(x)=4294967297, hx=2139095040, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967297] [L96] RET, EXPR __ieee754_sqrtf(x) [L96] float res = __ieee754_sqrtf(x); [L99] CALL, EXPR isnan_float(res) [L15] return x != x; VAL [\old(x)=4294967296, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967296] [L99] RET, EXPR isnan_float(res) [L99] COND TRUE !isnan_float(res) [L100] reach_error() VAL [one_sqrt=1, res=4294967296, tiny_sqrt=1/1000000000000000000000000000000, x=4294967297] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 46 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, 46 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=35occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 07:41:29,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/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_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/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_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/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_77386751-a3f0-4549-aa93-65556246a535/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 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:41:31,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:41:31,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:41:31,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:41:31,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:41:31,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:41:31,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:41:31,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:41:31,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:41:31,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:41:31,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:41:31,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:41:31,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:41:31,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:41:31,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:41:31,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:41:31,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:41:31,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:41:31,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:41:31,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:41:31,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:41:31,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:41:31,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:41:31,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:41:31,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:41:31,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:41:31,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:41:31,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:41:31,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:41:31,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:41:31,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:41:31,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:41:31,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:41:31,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:41:31,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:41:31,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:41:31,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:41:31,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:41:31,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:41:31,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:41:31,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:41:31,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 07:41:31,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:41:31,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:41:31,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:41:31,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:41:31,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:41:31,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:41:31,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:41:31,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:41:31,760 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:41:31,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:41:31,761 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:41:31,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:41:31,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:41:31,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:41:31,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:41:31,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:41:31,763 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:41:31,763 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:41:31,763 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:41:31,764 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:41:31,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:41:31,764 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:41:31,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:41:31,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:41:31,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:41:31,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:41:31,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:41:31,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:41:31,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:41:31,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:41:31,767 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:41:31,767 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:41:31,767 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:41:31,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:41:31,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:41:31,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:41:31,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:41:31,769 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_77386751-a3f0-4549-aa93-65556246a535/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 [2021-11-20 07:41:32,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:41:32,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:41:32,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:41:32,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:41:32,226 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:41:32,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-11-20 07:41:32,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/data/beac4c816/170872fa7fdc45eeb4bc3aef1d50d301/FLAGc109abc80 [2021-11-20 07:41:32,906 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:41:32,910 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-11-20 07:41:32,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/data/beac4c816/170872fa7fdc45eeb4bc3aef1d50d301/FLAGc109abc80 [2021-11-20 07:41:33,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/data/beac4c816/170872fa7fdc45eeb4bc3aef1d50d301 [2021-11-20 07:41:33,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:41:33,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:41:33,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:41:33,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:41:33,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:41:33,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76af3831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33, skipping insertion in model container [2021-11-20 07:41:33,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:41:33,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:41:33,456 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_77386751-a3f0-4549-aa93-65556246a535/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-11-20 07:41:33,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:41:33,487 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:41:33,536 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_77386751-a3f0-4549-aa93-65556246a535/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-11-20 07:41:33,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:41:33,568 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:41:33,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33 WrapperNode [2021-11-20 07:41:33,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:41:33,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:41:33,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:41:33,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:41:33,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,612 INFO L137 Inliner]: procedures = 20, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 116 [2021-11-20 07:41:33,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:41:33,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:41:33,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:41:33,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:41:33,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:41:33,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:41:33,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:41:33,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:41:33,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (1/1) ... [2021-11-20 07:41:33,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:41:33,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:41:33,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:41:33,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:41:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:41:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:41:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:41:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-20 07:41:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 07:41:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:41:33,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:41:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-20 07:41:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 07:41:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:41:33,847 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:41:33,848 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:41:34,630 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:41:34,636 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:41:34,637 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-20 07:41:34,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:41:34 BoogieIcfgContainer [2021-11-20 07:41:34,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:41:34,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:41:34,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:41:34,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:41:34,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:41:33" (1/3) ... [2021-11-20 07:41:34,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb7b8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:41:34, skipping insertion in model container [2021-11-20 07:41:34,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:41:33" (2/3) ... [2021-11-20 07:41:34,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb7b8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:41:34, skipping insertion in model container [2021-11-20 07:41:34,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:41:34" (3/3) ... [2021-11-20 07:41:34,662 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2021-11-20 07:41:34,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:41:34,668 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:41:34,747 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:41:34,766 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 07:41:34,768 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:41:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 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 07:41:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 07:41:34,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:34,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:41:34,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:41:34,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2021-11-20 07:41:34,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:41:34,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435616347] [2021-11-20 07:41:34,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:34,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:41:34,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:41:34,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:41:34,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:41:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:35,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 07:41:35,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:41:35,097 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 07:41:35,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:41:35,145 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 07:41:35,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:41:35,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435616347] [2021-11-20 07:41:35,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435616347] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:41:35,147 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:41:35,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:41:35,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356640405] [2021-11-20 07:41:35,150 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:41:35,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:41:35,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:41:35,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:41:35,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:41:35,213 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:41:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:41:35,230 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2021-11-20 07:41:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:41:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 07:41:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:41:35,241 INFO L225 Difference]: With dead ends: 67 [2021-11-20 07:41:35,241 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 07:41:35,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 07:41:35,247 INFO L933 BasicCegarLoop]: 46 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, 46 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 07:41:35,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:41:35,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 07:41:35,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 07:41:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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 07:41:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-11-20 07:41:35,303 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-11-20 07:41:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:41:35,304 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-11-20 07:41:35,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:41:35,304 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-11-20 07:41:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:41:35,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:41:35,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:41:35,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 07:41:35,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:41:35,506 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:41:35,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:41:35,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2021-11-20 07:41:35,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:41:35,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130041025] [2021-11-20 07:41:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:41:35,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:41:35,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:41:35,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:41:35,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:41:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:41:35,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 07:41:35,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:41:44,408 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 07:41:44,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:42:32,448 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 07:42:32,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:42:32,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130041025] [2021-11-20 07:42:32,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130041025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:42:32,449 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:42:32,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-11-20 07:42:32,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968452753] [2021-11-20 07:42:32,450 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:42:32,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 07:42:32,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:42:32,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 07:42:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-11-20 07:42:32,453 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:42:33,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:42:35,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:42:36,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:42:46,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:42:49,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:42:52,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:42:57,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:02,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:19,612 WARN L227 SmtUtils]: Spent 10.12s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:43:22,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:26,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:28,952 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:31,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:33,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:34,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:36,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:38,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:39,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:42,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:48,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:49,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:43:49,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:43:49,378 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2021-11-20 07:43:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:43:49,395 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 07:43:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:43:49,397 INFO L225 Difference]: With dead ends: 59 [2021-11-20 07:43:49,398 INFO L226 Difference]: Without dead ends: 54 [2021-11-20 07:43:49,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 70.3s TimeCoverageRelationStatistics Valid=70, Invalid=270, Unknown=2, NotChecked=0, Total=342 [2021-11-20 07:43:49,401 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 38 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 49.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:43:49,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 517 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 2 Unknown, 51 Unchecked, 49.8s Time] [2021-11-20 07:43:49,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-20 07:43:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2021-11-20 07:43:49,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 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 07:43:49,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2021-11-20 07:43:49,413 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 11 [2021-11-20 07:43:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:43:49,413 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-11-20 07:43:49,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:43:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2021-11-20 07:43:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 07:43:49,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:43:49,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:43:49,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:43:49,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:43:49,616 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:43:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:43:49,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1000761490, now seen corresponding path program 1 times [2021-11-20 07:43:49,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:43:49,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030946395] [2021-11-20 07:43:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:43:49,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:43:49,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:43:49,619 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:43:49,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:43:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:43:49,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:43:49,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:43:51,210 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 07:43:51,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:43:57,223 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 07:43:57,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:43:57,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030946395] [2021-11-20 07:43:57,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030946395] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:43:57,224 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:43:57,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 07:43:57,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468122386] [2021-11-20 07:43:57,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:43:57,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:43:57,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:43:57,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:43:57,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=39, Unknown=1, NotChecked=0, Total=56 [2021-11-20 07:43:57,226 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 07:44:03,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:44:03,701 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2021-11-20 07:44:03,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:44:03,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 12 [2021-11-20 07:44:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:44:03,704 INFO L225 Difference]: With dead ends: 56 [2021-11-20 07:44:03,705 INFO L226 Difference]: Without dead ends: 51 [2021-11-20 07:44:03,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=36, Invalid=72, Unknown=2, NotChecked=0, Total=110 [2021-11-20 07:44:03,707 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:44:03,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 147 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 33 Unchecked, 2.5s Time] [2021-11-20 07:44:03,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-20 07:44:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 31. [2021-11-20 07:44:03,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 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 07:44:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-11-20 07:44:03,716 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 12 [2021-11-20 07:44:03,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:44:03,716 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-11-20 07:44:03,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 07:44:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-11-20 07:44:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 07:44:03,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:44:03,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:44:03,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:44:03,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:44:03,935 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:44:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:44:03,935 INFO L85 PathProgramCache]: Analyzing trace with hash 939378801, now seen corresponding path program 1 times [2021-11-20 07:44:03,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:44:03,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789535317] [2021-11-20 07:44:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:44:03,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:44:03,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:44:03,937 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:44:03,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:44:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:04,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:44:04,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:44:09,645 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 07:44:09,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:44:13,667 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 07:44:13,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:44:13,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789535317] [2021-11-20 07:44:13,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789535317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:44:13,668 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:44:13,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-20 07:44:13,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875846258] [2021-11-20 07:44:13,669 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:44:13,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:44:13,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:44:13,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:44:13,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:44:13,671 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 07:44:22,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:44:22,678 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2021-11-20 07:44:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:44:22,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 13 [2021-11-20 07:44:22,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:44:22,680 INFO L225 Difference]: With dead ends: 36 [2021-11-20 07:44:22,680 INFO L226 Difference]: Without dead ends: 31 [2021-11-20 07:44:22,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:44:22,683 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:44:22,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 133 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 5 Unchecked, 1.9s Time] [2021-11-20 07:44:22,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-20 07:44:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 07:44:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 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 07:44:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-11-20 07:44:22,691 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 13 [2021-11-20 07:44:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:44:22,691 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-11-20 07:44:22,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 07:44:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-11-20 07:44:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 07:44:22,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:44:22,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:44:22,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:44:22,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:44:22,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:44:22,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:44:22,899 INFO L85 PathProgramCache]: Analyzing trace with hash -704868097, now seen corresponding path program 1 times [2021-11-20 07:44:22,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:44:22,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114825178] [2021-11-20 07:44:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:44:22,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:44:22,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:44:22,902 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:44:22,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:44:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:44:23,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:44:23,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:44:24,465 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 07:44:24,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:44:26,500 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 07:44:26,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:44:26,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114825178] [2021-11-20 07:44:26,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114825178] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:44:26,501 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:44:26,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 07:44:26,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755090199] [2021-11-20 07:44:26,502 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:44:26,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:44:26,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:44:26,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:44:26,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:44:26,503 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 07:44:26,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:44:26,974 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2021-11-20 07:44:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:44:26,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 23 [2021-11-20 07:44:26,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:44:26,976 INFO L225 Difference]: With dead ends: 31 [2021-11-20 07:44:26,976 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 07:44:26,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:44:26,984 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:44:26,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:44:26,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 07:44:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 07:44:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:44:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 07:44:26,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-11-20 07:44:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:44:26,989 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:44:26,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 07:44:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:44:26,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 07:44:26,995 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:44:27,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:44:27,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:44:27,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 07:44:28,401 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-11-20 07:44:28,401 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 103) no Hoare annotation was computed. [2021-11-20 07:44:28,401 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 07:44:28,401 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 07:44:28,402 INFO L858 garLoopResultBuilder]: For program point L94-2(lines 94 103) no Hoare annotation was computed. [2021-11-20 07:44:28,402 INFO L858 garLoopResultBuilder]: For program point L78-1(lines 78 82) no Hoare annotation was computed. [2021-11-20 07:44:28,402 INFO L854 garLoopResultBuilder]: At program point L78-2(lines 78 82) the Hoare annotation is: false [2021-11-20 07:44:28,402 INFO L858 garLoopResultBuilder]: For program point L78-3(lines 78 82) no Hoare annotation was computed. [2021-11-20 07:44:28,402 INFO L858 garLoopResultBuilder]: For program point L70(lines 70 73) no Hoare annotation was computed. [2021-11-20 07:44:28,403 INFO L854 garLoopResultBuilder]: At program point L55-2(lines 55 64) the Hoare annotation is: false [2021-11-20 07:44:28,403 INFO L858 garLoopResultBuilder]: For program point L55-3(lines 19 84) no Hoare annotation was computed. [2021-11-20 07:44:28,403 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-11-20 07:44:28,403 INFO L858 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2021-11-20 07:44:28,403 INFO L861 garLoopResultBuilder]: At program point L105(lines 86 106) the Hoare annotation is: true [2021-11-20 07:44:28,403 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-11-20 07:44:28,404 INFO L854 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start___ieee754_sqrtf_#res#1| |ULTIMATE.start___ieee754_sqrtf_#res#1|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|)) [2021-11-20 07:44:28,404 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 44) no Hoare annotation was computed. [2021-11-20 07:44:28,404 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 44) no Hoare annotation was computed. [2021-11-20 07:44:28,405 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 07:44:28,405 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 61) no Hoare annotation was computed. [2021-11-20 07:44:28,405 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 100) no Hoare annotation was computed. [2021-11-20 07:44:28,405 INFO L858 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2021-11-20 07:44:28,405 INFO L858 garLoopResultBuilder]: For program point L57-2(lines 57 61) no Hoare annotation was computed. [2021-11-20 07:44:28,406 INFO L854 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: (and (fp.lt |ULTIMATE.start___ieee754_sqrtf_~x#1| (fp.neg (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-20 07:44:28,406 INFO L858 garLoopResultBuilder]: For program point L24-3(lines 24 28) no Hoare annotation was computed. [2021-11-20 07:44:28,406 INFO L858 garLoopResultBuilder]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2021-11-20 07:44:28,406 INFO L854 garLoopResultBuilder]: At program point L41-3(lines 41 42) the Hoare annotation is: false [2021-11-20 07:44:28,406 INFO L858 garLoopResultBuilder]: For program point L41-4(lines 41 42) no Hoare annotation was computed. [2021-11-20 07:44:28,407 INFO L858 garLoopResultBuilder]: For program point L99(lines 99 102) no Hoare annotation was computed. [2021-11-20 07:44:28,407 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 75) no Hoare annotation was computed. [2021-11-20 07:44:28,407 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 07:44:28,407 INFO L854 garLoopResultBuilder]: At program point L83(lines 19 84) the Hoare annotation is: (not (fp.eq |ULTIMATE.start___ieee754_sqrtf_#res#1| |ULTIMATE.start___ieee754_sqrtf_#res#1|)) [2021-11-20 07:44:28,407 INFO L858 garLoopResultBuilder]: For program point L100(line 100) no Hoare annotation was computed. [2021-11-20 07:44:28,407 INFO L858 garLoopResultBuilder]: For program point L34(lines 34 35) no Hoare annotation was computed. [2021-11-20 07:44:28,408 INFO L858 garLoopResultBuilder]: For program point L68(lines 68 74) no Hoare annotation was computed. [2021-11-20 07:44:28,413 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-20 07:44:28,415 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:44:28,430 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 07:44:28,433 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 07:44:28,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:44:28 BoogieIcfgContainer [2021-11-20 07:44:28,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:44:28,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:44:28,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:44:28,438 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:44:28,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:41:34" (3/4) ... [2021-11-20 07:44:28,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 07:44:28,455 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-20 07:44:28,456 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-20 07:44:28,456 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 07:44:28,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 07:44:28,487 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) [2021-11-20 07:44:28,487 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) && 1bv32 == \result [2021-11-20 07:44:28,506 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 07:44:28,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:44:28,507 INFO L158 Benchmark]: Toolchain (without parser) took 175252.69ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 34.7MB in the beginning and 45.4MB in the end (delta: -10.7MB). Peak memory consumption was 1.6MB. Max. memory is 16.1GB. [2021-11-20 07:44:28,508 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 56.6MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 34.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:44:28,508 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.24ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 34.5MB in the beginning and 53.6MB in the end (delta: -19.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 07:44:28,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.63ms. Allocated memory is still 71.3MB. Free memory was 53.4MB in the beginning and 51.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:44:28,509 INFO L158 Benchmark]: Boogie Preprocessor took 38.57ms. Allocated memory is still 71.3MB. Free memory was 51.6MB in the beginning and 50.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:44:28,510 INFO L158 Benchmark]: RCFGBuilder took 986.60ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 37.5MB in the end (delta: 12.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 07:44:28,510 INFO L158 Benchmark]: TraceAbstraction took 173781.57ms. Allocated memory is still 71.3MB. Free memory was 54.0MB in the beginning and 49.0MB in the end (delta: 5.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-11-20 07:44:28,511 INFO L158 Benchmark]: Witness Printer took 69.30ms. Allocated memory is still 71.3MB. Free memory was 49.0MB in the beginning and 45.4MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:44:28,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 56.6MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 34.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.24ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 34.5MB in the beginning and 53.6MB in the end (delta: -19.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.63ms. Allocated memory is still 71.3MB. Free memory was 53.4MB in the beginning and 51.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.57ms. Allocated memory is still 71.3MB. Free memory was 51.6MB in the beginning and 50.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 986.60ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 37.5MB in the end (delta: 12.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 173781.57ms. Allocated memory is still 71.3MB. Free memory was 54.0MB in the beginning and 49.0MB in the end (delta: 5.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Witness Printer took 69.30ms. Allocated memory is still 71.3MB. Free memory was 49.0MB in the beginning and 45.4MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 100]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 173.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 93.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 54.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 855 SdHoareTripleChecker+Invalid, 53.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 89 IncrementalHoareTripleChecker+Unchecked, 679 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 188 IncrementalHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 176 mSDtfsCounter, 188 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 95.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 43 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 24 HoareAnnotationTreeSize, 7 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 77.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 128 ConstructedInterpolants, 8 QuantifiedInterpolants, 544 SizeOfPredicates, 34 NumberOfNonLiveVariables, 219 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant [2021-11-20 07:44:28,525 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-20 07:44:28,526 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~fp.lt~FLOAT(x, ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && 1bv32 == \result - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-11-20 07:44:28,754 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-20 07:44:28,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77386751-a3f0-4549-aa93-65556246a535/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE